PERTURBATION METHOD IN THE THEORY OF KINETIC-EQUATIONS Article GORDEEV A.N. Theoretical and Mathematical Physics. Vol. 63. 1985. P. 400-412
BILIARY ANASTOMOSES IN TUMORAL OBTURATION OF BILE-DUCTS Article VINOGRADOV V.V., LAPKIN K.V., LUTFALIEV T.A., KUNDA M.A. Vestnik Khirurgii Imeni I.I.Grekova. Vol. 134. 1985. P. 40-46