However, later investigations did not corroborate Belić's division. Contemporary Kajkavian dialectology begins with Croatian philologist Stjepan Ivšić's work "Jezik Hrvata kajkavaca" ("The Language of Kajkavian Croats", 1936), which highlighted accentual characteristics. Due to the great diversity within Kajkavian primarily in phonetics, phonology, and morphology, the Kajkavian dialect atlas features a large number of subdialects: from four identified by Ivšić to six proposed by Croatian linguist Brozović (formerly the accepted division) all the way up to fifteen according to a monograph by Croatian linguist Mijo Lončarić (1995).