1. Selective cytology smear for diagnosis of cancer;Ayre;American Journal of Obstetrics and Gynecology,1947
2. Modifcaciones periodicas del sedimento urinario en relacion con el circlo menstrual, su possible aplicacion como test de ovulacion;Biot;Semana Medica (Buenos Aires),1944
3. Corticotrophin stimulation of urethral cornification;Castellanos;Journal of the American Medical Association,1963
4. Urethral cytology in the diagnosis of secondary amenorrhoea;Castellanos;Journal of the American Medical Association,1964
5. Cytological cycle of the urinary sediment and its parallelism with the vaginal cycle;Del Castillo;Journal of Clinical Endocrinology and Metabolism,1948