@article{MS2_1981__49_166759,
     author = {Jouni Luukkainen},
     title = {Approximating continous maps of metric spaces into manifolds by embeddings.},
     journal = {Mathematica Scandinavica},
     pages = {61--85},
     year = {1981},
     volume = {49},
     zbl = {0458.57010},
     url = {http://geodesic.mathdoc.fr/item/MS2_1981__49_166759/}
}