@article{ARM_1970_6_4_a4,
     author = {Rosenberg, Ivo},
     title = {The refinement of two isomorphic generalized lexicographic products},
     journal = {Archivum mathematicum},
     pages = {229--235},
     year = {1970},
     volume = {6},
     number = {4},
     mrnumber = {0311544},
     zbl = {0252.08002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1970_6_4_a4/}
}