Secreting germ cell tumors of the central nervous system (CNS). First results of the cooperative German/Italian pilot study (CNS sGCT) - Calaminus, Gabriele; Andreussi, Luciano; Garré, Maria-Luisa; Kortmann, Rolf Dieter; Schober, Rolf; Göbel, Ulrich (Klinische Pädiatrie, 1997)