@article{10_4153_CMB_1970_065_6,
     author = {Lambek, Joachim},
     title = {Subequalizers},
     journal = {Canadian mathematical bulletin},
     pages = {337--349},
     year = {1970},
     volume = {13},
     number = {3},
     doi = {10.4153/CMB-1970-065-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1970-065-6/}
}