@article{10_4153_CMB_1979_038_8,
     author = {Atalla, Robert E.},
     title = {Generalized {Markov} {Projections} and {Matrix} {Summability}},
     journal = {Canadian mathematical bulletin},
     pages = {311--316},
     year = {1979},
     volume = {22},
     number = {3},
     doi = {10.4153/CMB-1979-038-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1979-038-8/}
}