Levitas E., Lunenfeld E., Weisz N., Friger M., Potashnik G. Relationship between age and semen parameters in men with normal sperm concentration: analysis of 6022 semen samples. „Andrologia”. 2 (39), s. 45–50, kwiecień 2007. DOI: 10.1111/j.1439-0272.2007.00761.x. PMID: 17430422.
Levitas E., Lunenfeld E., Weisz N., Friger M., Potashnik G. Relationship between age and semen parameters in men with normal sperm concentration: analysis of 6022 semen samples. „Andrologia”. 2 (39), s. 45–50, kwiecień 2007. DOI: 10.1111/j.1439-0272.2007.00761.x. PMID: 17430422.
Guillet G., Dagregorio G., Guillet MH. [Vulvar contact dermatitis due to seminal allergy: 3 cases]. „Annales de dermatologie et de vénéréologie”. 2 (132), s. 123–125, luty 2005. PMID: 15798560.