@article{MZ_1953__59_169371,
     author = {Hao Wang},
     title = {The categoricity question of certain grand logics.},
     journal = {Mathematische Zeitschrift},
     pages = {47--56},
     publisher = {mathdoc},
     volume = {59},
     year = {1953},
     zbl = {0052.24707},
     url = {http://geodesic.mathdoc.fr/item/MZ_1953__59_169371/}
}