Analysis of information sources in references of the Wikipedia article "Chaitya" in English language version.
"It resembles an early Christian church in its arrangement; consisting of a nave and side-aisles terminating in an apse or semi-dome, around which the aisle is carried... Fifteen pillars on each side separate the nave from the aisle..."
— Ancient India, Ramesh Chandra Majumdar, Motilal Banarsidass Publ., 1977, p.225