@article{10_4064_fm_117_2_117_160,
     author = {Andreas Blass},
     title = {Words, free algebras, and coequalizers},
     journal = {Fundamenta Mathematicae},
     pages = {117--160},
     publisher = {mathdoc},
     volume = {117},
     number = {2},
     year = {1983},
     doi = {10.4064/fm-117-2-117-160},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-117-2-117-160/}
}