@article{MS2_1974__34_166361,
     author = {James Li-Ming Wang},
     title = {Modulus of {Approximate} {Continuity} for {R(X).}},
     journal = {Mathematica Scandinavica},
     pages = {219--225},
     publisher = {mathdoc},
     volume = {34},
     year = {1974},
     zbl = {0291.46036},
     url = {http://geodesic.mathdoc.fr/item/MS2_1974__34_166361/}
}