Andrushko, Valerie A.; Verano, John W. (1 September 2008). "Prehistoric trepanation in the Cuzco region of Peru: A view into an ancient Andean practice". American Journal of Physical Anthropology. 137 (1): 11–12. doi:10.1002/ajpa.20836. PMID18386793.
Poortinga, Ernest; G (2007). "Criminal Responsibility and Intent". Journal of the American Academy of Psychiatry and the Law Online. 35 (1). www.jaapl.org: 124. Archived from the original on 2011-09-28. Retrieved 2008-02-22.
nih.gov
pubmed.ncbi.nlm.nih.gov
Andrushko, Valerie A.; Verano, John W. (1 September 2008). "Prehistoric trepanation in the Cuzco region of Peru: A view into an ancient Andean practice". American Journal of Physical Anthropology. 137 (1): 11–12. doi:10.1002/ajpa.20836. PMID18386793.
Poortinga, Ernest; G (2007). "Criminal Responsibility and Intent". Journal of the American Academy of Psychiatry and the Law Online. 35 (1). www.jaapl.org: 124. Archived from the original on 2011-09-28. Retrieved 2008-02-22.