@article{10_4064_cm_15_2_189_190,
     author = {T\^oru Sait\^o},
     title = {A remark on elementary pseudogroups},
     journal = {Colloquium Mathematicum},
     pages = {189--190},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {1966},
     doi = {10.4064/cm-15-2-189-190},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-15-2-189-190/}
}