@article{10_4153_CJM_1971_054_6,
     author = {Behrens, Ernst August},
     title = {The {Arithmetic} of the {Quasi-Uniserial} {Semigroups} without {Zero}},
     journal = {Canadian journal of mathematics},
     pages = {507--516},
     year = {1971},
     volume = {23},
     number = {3},
     doi = {10.4153/CJM-1971-054-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-054-6/}
}