Simultaneous single-pulse observations of radio pulsars - II. Orthogonal polarization modes in PSR B1133+16A. Karastergiou, M. Kramer, S. Johnston, A. G. Lyne, N. D. R. Bhat and Y. GuptaA&A, 391 1 (2002) 247-251DOI: https://doi.org/10.1051/0004-6361:20020793