Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Saito Akio and Shimizu Bunji,"Synthesis of mesoionic triazolopyridine. I. N-alkylation of 1,2,4-triazolo[4,3-a]pyridin-3(2H)-one.",Bulletin of the Chemical Society of Japan,0009-2673,The Chemical Society of Japan,1977,50,6,1596-1599,https://cir.nii.ac.jp/crid/1390282679117930880,https://doi.org/10.1246/bcsj.50.1596