@article{10_4064_fm_67_2_163_169,
     author = {G. Wenzel},
     title = {Extensions of congruence relations on infinitary partial algebras. {A} problem of {G.} {Gr\"atzer}},
     journal = {Fundamenta Mathematicae},
     pages = {163--169},
     publisher = {mathdoc},
     volume = {67},
     number = {2},
     year = {1970},
     doi = {10.4064/fm-67-2-163-169},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-67-2-163-169/}
}