@article{10_4064_cm_41_2_167_179,
     author = {Josef Niederle and Libor Pol\'ak},
     title = {The category of nonindexed algebras and weak homomorphisms},
     journal = {Colloquium Mathematicum},
     pages = {167--179},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {1979},
     doi = {10.4064/cm-41-2-167-179},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-41-2-167-179/}
}