David L. Reed et al. “Genetic Analysis of Lice Supports Direct Contact between Modern and Archaic Humans”. PLoS Biology 2, № 11 (2004).
36
Odile Loreille, Françoise Bouchet. “Evolution of Ascariasis in Humans and Pigs: A Multi-disciplinary Approach”. Memorias do Instituto Oswaldo Cruz 98, Suppl. 1 (2003).