Anthropologist Esther Rebato [pictured here] of the University of the Basque Country has mapped the presence of nasal characteristics in people who dwell in the Basque Country.
Her study is:
“Aspectos métricos y morfoscópicos de la región nasal en vascos ["Metric aspects and morphoscopic the nasal region in Basques"],” Esther Rebato, Munibe Antropologia – Arkeologia, no. 39, 1987 , pp. 29-37.
Here’s detail from the study: