@incollection{AST_1985__126__45_0,
     author = {M\'erindol, Jean-Yves},
     title = {Propri\'et\'es \'el\'ementaires des surfaces $K3$},
     booktitle = {G\'eom\'etrie des surfaces $K3$ : modules et p\'eriodes - S\'eminaire Palaiseau},
     series = {Ast\'erisque},
     pages = {45--57},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {126},
     year = {1985},
     zbl = {0574.14034},
     language = {fr},
     url = {http://www.numdam.org/item/AST_1985__126__45_0/}
}