AN IMPROVED PROCEDURE FOR PURIFICATION OF L-LYSINE Α-OXIDASE FROM TRICHODERMA SP. Статья Yankevich N.B., Laugalene N.F., Vesa V.S., Smirnova I.P., Berezov T.T., Khaduev Kh.S. Voprosy Meditsinskoj Khimii. Том 35. 1989. С. 84-86