@article{oai:tsukuba.repo.nii.ac.jp:00017660,
 author = {Tanaka, Yoshio and Shimizu, Yuuko},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {405--415},
 title = {Products of k-spaces, and special countable spaces},
 volume = {27},
 year = {2003}
}