@Book{Duma1974,
author  = "Duma, Andrei",
title   = "Zur Konkretisierung kompakter Riemannscher Flächen",
year    = "1974",
address = "München",
series  = "Sitzungsberichte",
volume  = "1973,8",
url     = "https://publikationen.badw.de/en/003384333",
}