@article{10_4153_CJM_1992_013_8,
     author = {Wi\'sniewski, Jaros{\l}aw A.},
     title = {On {Topological} {Properties} of {Some} {Coverings.} {An} {Addendum} to a {Paper} of {Lanteri} and {Struppa}},
     journal = {Canadian journal of mathematics},
     pages = {206--214},
     year = {1991},
     volume = {44},
     number = {1},
     doi = {10.4153/CJM-1992-013-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1992-013-8/}
}