@article{ARM_1995__31_1_a7,
     author = {Cz\'edli, G\'abor},
     title = {Diamond identities for relative congruences},
     journal = {Archivum mathematicum},
     pages = {65--74},
     publisher = {mathdoc},
     volume = {31},
     number = {1},
     year = {1995},
     mrnumber = {1342377},
     zbl = {0842.08004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1995__31_1_a7/}
}