@article{TAC_2019_34_a16,
     author = {Hans-E. Porst},
     title = {Colimits  of monoids},
     journal = {Theory and applications of categories},
     pages = {456--467},
     publisher = {mathdoc},
     volume = {34},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2019_34_a16/}
}