@book{ title = "Ruusbroec", author = "Warnar, Geert", year = "2003", publisher = "Athenaeum - Polak & Van Gennep", address = "Amsterdam", title = "literatuur en mystiek in de veertiende eeuw", language = "dut", isbn = "9025360947", keywords = "Ruusbroec, Jan van <1293-1381>,Ruusbroec, Jan van,Mystiek,Mystik", }