"Bulgarian dialects (Bulgarian: \u0431\u044A\u043B\u0433\u0430\u0440\u0441\u043A\u0438 \u0434\u0438\u0430\u043B\u0435\u043A\u0442\u0438, balgarski dialekti, also \u0431\u044A\u043B\u0433\u0430\u0440\u0441\u043A\u0438 \u0433\u043E\u0432\u043E\u0440\u0438, balgarski govori or \u0431\u044A\u043B\u0433\u0430\u0440\u0441\u043A\u0438 \u043D\u0430\u0440\u0435\u0447\u0438\u044F, balgarski narechiya) are the regional spoken varieties of the Bulgarian language, a South Slavic language. Bulgarian dialectology dates to the 1830s and the pioneering work of Neofit Rilski, Bolgarska gramatika (published 1835 in Kragujevac, Serbia, then Ottoman Empire)."@en . . .