 Complete the following phrase:  He worked under the influence of Teodor Kračun and Georgije Mišković, and his works are mostly found in village and town churches in both Srem and Slavonia. He was the first assistant to Dimitrije Bačević and Teodor Kračun. He was a prolific painter in the second half of the 18th century. He also signed his works as Grigorije Čalmanski. A great number of his art pieces were destroyed or disappeared during the 