Growth and Development of Mediterranean Monk Seal Pups during Rehabilitation, E. Androukaki, E. Fatsea, L. 't Hart, A.D.M.E. Osterhaus, E. Tounta,S. Kotomatas, Monachus Science Posters, The Monachus Guardian, Vol. 5 (1): May 2002, This poster was presented at the 16th ECS (European Cetacean Society) Conference, "Marine Mammal Health: from Individuals to Populations", 7-11 April 2002, Liege, Belgium.
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MedlinePlus (octubre de 2007). «Desarrollo fetal». Enciclopedia médica en español. Consultado el 12 de marzo de 2008. «Semanas 13 a 16: la piel fetal es casi transparente se desarrolla un vello fino en la cabeza denominado lanugo.»
