Geroicheskai︠a︡ zhiznʹ Matė Zalka, generala Lukacha /
Gordon, I︠A︡kov Ilʹich.
Erickson, John,1929-2002,former owner.StEdNL
Erickson, Ljubica,former owner.StEdNL
Geǐger, B. I︠A︡.
Moskva : Voenizdat,
1959.
John and Ljubica Erickson collection.
Zalka, Máté, 1896-1937.