Veliko Ivanov

发表

Veliko Ivanov, 1998 .

Veliko Ivanov, Gentcho Nankov, V. Ivanov, 1998 .

Veliko Ivanov, Valentin S. Kisimov, Monika Tzaneva, 2010, iNetSec.

Veliko Ivanov, Vanio Kirov, V. Ivanov, 1997 .