References

 
• Ballesteros, E., Collados, M., Bonet, J. A., et al. 1996, A&AS, 115, 353 NASA ADS  
• Balthasar, H., & Schmidt, W. 1993, A&A, 279, 243 NASA ADS  
• Bellot Rubio, L. R. 2003, in 3rd International workshop on solar polarization, ed. J. Trujillo Bueno, & J. Sánchez Almeida, ASP Conf. Ser., in press  
• Bellot Rubio, L. R., Collados, M., Ruiz Cobo, B., & Rodríguez Hidalgo, I. 2000, ApJ, 534, 989 NASA ADS  
• Bellot Rubio, L. R., Rodríguez Hidalgo, I., Collados, M., Khomenko, E., & Ruiz Cobo, B. 2001, ApJ, 560, 1010 NASA ADS  
• Bellot Rubio, L. R., Collados, M., Ruiz Cobo, B., & Rodríguez Hidalgo, I. 2002, Il Nuovo Cimento, 25, 543  
• Bellot Rubio, L. R., Balthasar, H., Collados, M., & Schlichenmaier, R. 2003, A&A, 403, L47 NASA ADS  
• Berdyugina, S. V., & Solanki, S. K. 2001, A&A, 380, L5 NASA ADS  
• Berdyugina, S. V., Solanki, S. K., & Lagg, A. 2002, in Cool Stars, Stellar Systems and the Sun XII, ed. T. Ayres, ASP Conf. Ser., in press  
• Borrero, J. M., Lagg, A., Solanki, S. K., et al. 2003, in Current Theoretical Models and High Resolution Solar Observations: Preparing for ATST, ed. A. A. Pevtsov, & H. Uitenbroek, ASP Conf. Ser., 286, 235  
• Bruls, J. H. M. J., Lites, B. W., & Murphy, G. A. 1991, in Solar polarimetry, Proc. 11th Sacramento Peak Workshop, ed. L. November, 444  
• Choudhuri, A. R. 1986, ApJ, 302, 809 NASA ADS  
• Collados, M. 1999, in Magnetic field and oscillations, ed. B. Schmieder, B. Hofmann, & J. Staude, ASP Conf. Ser., 184, 3  
• Collados, M. 2003, in Polarimetry in Astronomy, ed. Silvano Fineschi, Proc. SPIE, 4843, 55  
• Collados, M., Martínez Pillet, V., Ruiz Cobo, B., Del Toro Iniesta, J. C., & Vázquez, M. 1994, A&A, 291, 622 NASA ADS  
• Collados, M., Joven, E., Fuentes, F. J., et al. 1997, in Advances in the Physics of Sunspots, ed. B. Schmieder, J. C. Del Toro Iniesta, & M. Vázquez, ASP Conf. Ser., 118, 361  
• Degenhardt, D., & Wiehr, E. 1991, A&A, 252, 821 NASA ADS  
• Degenhardt, D., & Lites, B. W. 1993a, ApJ, 404, 383 NASA ADS  
• Degenhardt, D., & Lites, B. W. 1993b, ApJ, 416, 875 NASA ADS  
• Del Toro Iniesta, J. C, Tarbell, T. D., & Ruiz Cobo, B. 1994, ApJ, 436, 400 NASA ADS  
• Del Toro Iniesta, J. C., Bellot Rubio, L. R., & Collados, M. 2001, A&A, 549, L139  
• Elmore, D. F., Lites, B. W., Tomczyk, S., et al. 1992, Proc. SPIE, 1746, 22  
• Frutiger, C. 2000, Inversion of Zeeman split Stokes profiles: Application to solar and stellar surface structures, Ph.D. Thesis, Institute of Astronomy, ETH Zürich, No. 13896  
• Frutiger, C., Solanki, S. K., Fligge, M., & Bruls, J. H. M. J. 2000, A&A, 358, 1109 NASA ADS  
• Hagyard, M. J. 1987, Sol. Phys., 107, 239 NASA ADS  
• Harvey, J. W. 1977, in Highlights of Astronomy, ed. E. A. Müller, 4, 223  
• Keppens, R., & Martínez Pillet, V. 1996, A&A, 316, 229 NASA ADS  
• Khomenko, E. V., Collados, M., Solanki, S. K., Lagg, A., & Trujillo Bueno, J. 2003, A&A, 408, 1115 NASA ADS  
• Kopp, G., & Rabin, D. 1992, Sol. Phys., 141, 253 NASA ADS  
• Kurucz, R. L. 1992, in The Stellar Population of Galaxies, ed. B. Barbuy, & A. Renzini, IAU Symp., 149, 225  
• Landi Degl'Innocenti, E., & Landolfi, M. 1982, Sol. Phys., 77, 13  
• Lin, H. 1995, ApJ, 446, L421  
• Lin, H., & Rimmele, T. 1999, ApJ, 514, 448 NASA ADS  
• Lites, B. W., & Skumanich, A. P. 1990, ApJ, 348, 747 NASA ADS  
• Lites, B. W., Elmore, D. F., Seagraves, P., & Skumanich, A. P. 1993, ApJ, 418, 928 NASA ADS  
• Livingston, W. 1991, BAAS, 23, 1030 NASA ADS  
• Livingston, W. 2002, Sol. Phys., 207, 41 NASA ADS  
• Martínez Pillet, V. 1997, 1st Advances in Solar Physics Euroconference. Advances in Physics of Sunspots, ASP Conf. Ser., 118, 212  
• Martínez Pillet, V. 2000, A&A, 361, 374  
• Martínez Pillet, V. 2001, A&A, 369, 644 NASA ADS  
• Martínez Pillet, V., Collados, M., Sánchez Almeida, J., et al. 1999, in High Resolution Solar Physics: Theory, Observations, and Techniques, ed. T. R. Rimmele, K. S. Balasubramaniam, & R. R. Radick, ASP Conf. Ser., 183, 264  
• McPherson, M. R., Lin, H., & Kuhn, J. R. 1992, Sol. Phys., 139, 255 NASA ADS  
• Muglach, K., & Solanki, S. K. 1992, A&A, 263, 301 NASA ADS  
• Pahlke, K. D., & Wiehr, E. 1990, A&A, 228, 246 NASA ADS  
• Parker, E. N. 1979, ApJ, 234, 333 NASA ADS  
• Press, W. H., Teukolsky, S. A., Vetterling, W. T., & Flannery, B. P. 1992, Numerical Recipes (New-York: Cambridge Univ. Press)  
• Ruiz Cobo, B., & Del Toro Iniesta, J. C. 1992, ApJ, 398, 375 NASA ADS  
• Ruiz Cobo, B., & Del Toro Iniesta, J. C. 1994, A&A, 283, 129 NASA ADS  
• Rüedi, I., Solanki, S. K., Livingston, W., & Stenflo, J. O. 1992a, A&A, 263, 323 NASA ADS  
• Rüedi, I., Solanki, S. K., & Rabin, D. 1992b, A&A, 261, L21 NASA ADS  
• Rüedi, I., Solanki, S. K., Keller, C. U., & Frutiger, C. 1998, A&A, 338, 1089 NASA ADS  
• Rüedi, I., Solanki, S. K., & Keller, C. U. 1999, A&A, 348, L37 NASA ADS  
• Sánchez Almeida, J., & Lites, B. W. 1992, ApJ, 398, 359 NASA ADS  
• Schlichenmaier, R., & Schmidt, W. 2000, A&A, 358, 1122 NASA ADS  
• Schlichenmaier, R., & Collados, M. 2002, A&A, 381, 668 NASA ADS  
• Schlichenmaier, R., & Solanki, S. K. 2003, A&A, submitted  
• Schmidt, W., Hofmann, A., Balthasar, H., Tarbell, T. D., & Frank, Z. A. 1992, A&A, 264, L27 NASA ADS  
• Skumanich, A., & Lites, B. W. 1987, ApJ, 322, 473 NASA ADS  
• Solanki, S. K. 1987, Photspheric layers of solar magnetic fluxtubes, Ph.D. Thesis, Institute of Astronomy, ETH Zürich, No. 8309  
• Solanki, S. K. 2003, A&ARv, 11, 153 NASA ADS  
• Solanki, S. K., & Montavon, C. A. P. 1993, A&A, 275, 283 NASA ADS  
• Solanki, S. K., Rüedi, I., & Livingston, W. 1992a, A&A, 263, 312 NASA ADS  
• Solanki, S. K., Rüedi, I., & Livingston, W. 1992b, A&A, 263, 339 NASA ADS  
• Solanki, S. K., Walther, U., & Livingston, W. 1993, A&A, 277, 639 NASA ADS  
• Solanki, S. K., Zufferey, D., Lin, H., Rüedi, I., & Kuhn, J. R. 1996, A&A, 310, L33 NASA ADS  
• Sun, W.-H., Giampapa, M. S., & Worden, S. P. 1987, ApJ, 312, 930 NASA ADS  
• Title, A. M., Frank, Z. A., Shine, R. A., et al. 1993, ApJ, 403, 780 NASA ADS  
• Venkatakrishnan, P., Hagyard, M. J., & Hathaway, D. H. 1988, Sol. Phys., 115, 25  
• Westendorp Plaza, C., Del Toro Iniesta, J. C., Ruiz Cobo, B., et al. 1997a, Nature, 389, 47  
• Westendorp Plaza, C., Del Toro Iniesta, J. C., Ruiz Cobo, B., et al. 1997b, in Advances in the Physics of Sunspots, ed. B. Schmieder, J. C. Del Toro Iniesta, & M. Vázquez, ASP Conf. Ser., 118, 202  
• Westendorp Plaza, C., Del Toro Iniesta, J. C., Ruiz Cobo, B., et al. 2001a, ApJ, 547, 1130 NASA ADS  
• Westendorp Plaza, C., Del Toro Iniesta, J. C., Ruiz Cobo, B., et al. 2001b, ApJ, 547, 1148 NASA ADS