TICHÝ, Miloš, ZÁVADA, Jiří, PODLAHA, J., VOJTÍŠEK, P. Preparation, Resolution and Absolute Configuration of 2,2'-Bipyridine-3,3'-dicarboxylic Acid 1,1'-Dioxide and Its Ester. Tetrahedron Asymmetry. 1995, 6(6), 1279-1282. ISSN 0957-4166.