article 1931 Candela, Nicolo: Accumulation of blood, reflexed from the uterus, into the peritoneum. A contribution to the etiology of endometrioma ·doi:10.1016/s0002-9378(31)90588-7
article 1931 Molinengo: Autotransplants of endometrium in the peritoneum of rabbits ·doi:10.1016/s0002-9378(31)90591-7