@article{10_4153_CJM_1975_115_1,
     author = {Wicke, H. H. and Jr., J. M. Worrell},
     title = {A {Characterization} of {Spaces} {Having} {Bases} of {Countable} {Order} in {Terms} of {Primitive} {Bases}},
     journal = {Canadian journal of mathematics},
     pages = {1100--1109},
     year = {1975},
     volume = {27},
     number = {5},
     doi = {10.4153/CJM-1975-115-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1975-115-1/}
}