Discovery of close binary central stars in the planetary nebulae NGC 6326 and NGC 6778B. Miszalski, D. Jones, P. Rodríguez-Gil, H. M. J. Boffin, R. L. M. Corradi and M. Santander-GarcíaA&A, 531 (2011) A158DOI: https://doi.org/10.1051/0004-6361/201117084
