A. I. Iliev, “Threefolds with a numerically effective canonical class of numerical dimension $1$”, Vestnik Moskov. Univ. Ser. 1. Mat. Mekh., 1988, no. 1, 3–6
1986
3.
A. I. Iliev, “Log-terminal singularities of algebraic surfaces”, Vestnik Moskov. Univ. Ser. 1. Mat. Mekh., 1986, no. 3, 38–44