@article{10_21136_CMJ_1989_102348,
     author = {Duda, Jarom{\'\i}r},
     title = {Coherence in varieties of algebras},
     journal = {Czechoslovak Mathematical Journal},
     pages = {711--716},
     publisher = {mathdoc},
     volume = {39},
     number = {4},
     year = {1989},
     doi = {10.21136/CMJ.1989.102348},
     mrnumber = {1018007},
     zbl = {0704.08003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1989.102348/}
}