1. Profil biochimique et valeurs (normales) en obstétrique;Letellier;Union. Med. Can.,1975
2. Alkaline phosphatase in human sera and placentae;Boyer;Science,1961
3. Heat-stable alkaline phosphatase as an index of placental function;Messer;Am. J. Obstet. Gynecol.,1967
4. Serum placental alkaline phosphatase in normal pregnancy and pre-eclampsia;Hunter;Obstet. Gynecol.,1970
5. Serum alkaline phosphatase in pregnancy II;Sagen,1970