Full reference OpenMind biblio ref
Rozenfeld, Boris. 1958. “Dokazatel’stva Pyatogo Postulata Yevklida Srednevekovykh Matematikov Hasana Ihn Al-Haysama I L’va Gersonida”. Istoriko-Matematicheskiye Issledovaniya 11: 733-82.
{ Boris Rozenfeld, 1958 #10893 }