@article{10_4064_ap_5_1_55_65,
     author = {M. Ramanujan},
     title = {On a class of double sequence transformations},
     journal = {Annales Polonici Mathematici},
     pages = {55--65},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {1958},
     doi = {10.4064/ap-5-1-55-65},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-5-1-55-65/}
}