@article{CLTM_1973_1973_1_a11,
     author = {Crofts, G.},
     title = {A {Generalization} of {Echelon} {Spaces.}},
     journal = {Collectanea mathematica},
     pages = {139-149},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {1973},
     zbl = {0305.46021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1973_1973_1_a11/}
}