@article{10_4153_CJM_1973_086_0,
     author = {Martin, Harold W.},
     title = {Metrizability of {M-Spaces}},
     journal = {Canadian journal of mathematics},
     pages = {840--841},
     year = {1973},
     volume = {25},
     number = {4},
     doi = {10.4153/CJM-1973-086-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1973-086-0/}
}