@article{JMPA_1934_9_13__69_0,
     author = {Michal, A. D. and Martin, R. S.},
     title = {Some expansions in vector space},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {69--91},
     publisher = {Gauthier-Villars},
     volume = {Ser. 9, 13},
     year = {1934},
     zbl = {0009.02301},
     language = {en},
     url = {http://www.numdam.org/item/JMPA_1934_9_13__69_0/}
}