@article{10_4153_CJM_1970_044_4,
     author = {Singh, K.},
     title = {On the {Vanishing} of a {(G,} \ensuremath{\sigma}) {Product} in a {(G,} \ensuremath{\sigma}) {Space}},
     journal = {Canadian journal of mathematics},
     pages = {363--371},
     year = {1970},
     volume = {22},
     number = {2},
     doi = {10.4153/CJM-1970-044-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-044-4/}
}