CRYSTAL AND MOLECULAR STRUCTURES OF SELECTED OXIDATIVE NITRATION PRODUCTS OF AMINOPYRAZINE AND 2-AMINO-3-HYDROXYPYRIDINE Article Ковальчукова О.В., Нгуен Динь, Сташ А.И., Страшнова С.Б., Зайцев Б.Е. KRISTALLOGRAFIYA / Crystallography Reports. Наука. Vol. 59. 2014. P. 65-70