Firasat, Sadaf; Khaliq, Shagufta; Mohyuddin, Aisha; Papaioannou, Myrto; Tyler-Smith, Chris; Underhill, Peter A; Ayub, Qasim (2006). "Y-chromosomal evidence for a limited Greek contribution to the Pathan population of Pakistan". European Journal of Human Genetics 15 (1): 121–6. doi:10.1038/sj.ejhg.5201726. PMC 2588664. PMID17047675.