Актуални въпроси на частното правоEmil Georgiev, Ekaterina Mateeva, Ivan Ruschev, Vent︠s︡islav L. Petrov, Bulgaria) Aktualni vŭprosi na chastnoto pravo (Conference) (2016 Sofia · First published 2018Open the Tome
Desiataia sovetskaia antarkticheskaia ekspeditsiiaMikhail Emelʹianovich Ostrekin, Ivan Georgiev Petrov · First published 1969Open the Tome
