@article{10_4153_CMB_1972_054_3,
     author = {Dash, A. T.},
     title = {Positive {Definite} {Sequence} of {Operators} and a {Fixed} {Point} {Theorem}},
     journal = {Canadian mathematical bulletin},
     pages = {295--295},
     year = {1972},
     volume = {15},
     number = {2},
     doi = {10.4153/CMB-1972-054-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1972-054-3/}
}