1. De spontane abortus;W, I.Vlaanderen,1983
2. The diagnosis of early pregnancy failure by sonar;Robinson, H.P.;Br J Obstet Cynaecol,1975
3. Outcome of pregnancies following a spontaneous abortion with chromosomal anomalies;Boue, J.G.; Boue, A.; Lazar, P.; Guguen, S.;Amj Obstet Gynecol,1973
4. Aetiology of spontaneous abortion;Lauritsen, J.G.;Acta Obstet Gynecol Scand,1976
5. Fetal loss after implantation;Miller, J.T.; Williamson, E.; Glue, J.; Gordon, Y.B.; Grudzinskas, J.G.; Sykes, A.;Lancet,1980