@article{10_1017_S0017089500002676,
     author = {Fitz-Gerald, D. G.},
     title = {Divisibility in categories of a class which includes the category of binary relations},
     journal = {Glasgow mathematical journal},
     pages = {22--30},
     year = {1976},
     volume = {17},
     number = {1},
     doi = {10.1017/S0017089500002676},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500002676/}
}