Cant do a link but an extract here gives an answer to a Font name
The two brothers introduced a Slavonic languge into Christian religion which until then had been in Latin. They used the Slavonic dialect, spoken by the Slavonic inhabitants in the vicinity of Thessaloniki, where the brothers came from, and Constatine created a new alphabet for it, from the lower case of the Greek alphabet and from some oriental letters. This language, which differed only partially from the language of the inhabitants of Great Moravia, became the first literary language of the Slavs. It is now called Church Slavonic; the alphabet, used by Constantine and his pupils in Moravia, is called Glagolithic