Author :   Kopchak K.V.

Level of lethality of patients with external genital tumors at retrospective 25-year-old observation, the role of clinical condition
Authors: Samokhvalova O.O. Kopchak K.V. Nespryadko S.V. Tsip N.P.... T. 10, № 3-4 (39-40)
Radical surgical treatment of malignant periampullar neoplasms
Authors: Kopchak V.M. Homyak I.V. Kopchak K.V. Duvalko A.V.... Специальный выпуск I (2011)