@article{1195520838,
author = {Isiwata, Takesi},
title = {The product of $M$-spaces need not be an $M$-space},
journal = {Proc. Japan Acad.},
volume = {45},
number = {8},
year = {1969},
pages = { 154-156},
language = {en},
url = {http://dml.mathdoc.fr/item/1195520838}
}
Isiwata, Takesi. The product of $M$-spaces need not be an $M$-space. Proc. Japan Acad., Tome 45 (1969) no. 8, pp. 154-156. http://gdmltest.u-ga.fr/item/1195520838/