@article{10_4153_CMB_1967_025_4,
     author = {Baggs, Ivan},
     title = {Some {Relationships} between {Filters*}},
     journal = {Canadian mathematical bulletin},
     pages = {257--260},
     year = {1967},
     volume = {10},
     number = {2},
     doi = {10.4153/CMB-1967-025-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1967-025-4/}
}