@article{51d0049310644472afbb6ae890e7880f,
title = "Determining whether a groupoid is a group",
keywords = "abelian, associativity, group, groupoid, solvability",
author = "Tarjan, {Robert E.}",
note = "Funding Information: a&&*L h *e. .K s I ~oml Science Foundation under grant number GJ-992.",
year = "1972",
month = feb,
doi = "10.1016/0020-0190(72)90012-9",
language = "English (US)",
volume = "1",
pages = "120--124",
journal = "Information Processing Letters",
issn = "0020-0190",
publisher = "Elsevier",
number = "3",
}