Björk, G.R. and Svensson, I. (1969). „Studies on microbial RNA. Fractionation of tRNA methylases from Saccharomyces cerevisiae”. Eur. J. Biochem.9: 207-215. PMID4896260.
Glick, J.M., Averyhart, V.M. and Leboy, P.S. (1978). „Purification and characterization of two tRNA-(guanine)-methyltransferases from rat liver”. Biochim. Biophys. Acta518: 158-171. PMID629973.
Smolar, N., Hellman, V. and Svennson, I. (1975). „Two transfer RNA (1-methylguanine) methylases from yeast”. Nucleic Acids Res.2: 993-1004. PMID1096087.