@article{PIM2_1992__52(66)_257893,
     author = {Gupta, Vijay and Agrawal, P.N.},
     title = {-approximation by iterative combination of {Phillips} operators.},
     journal = {Publications de l 'Institut Math\'ematique. Nouvelle S\'erie},
     pages = {67},
     publisher = {mathdoc},
     volume = {52(66)},
     year = {1992},
     zbl = {0794.41008},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/PIM2_1992__52(66)_257893/}
}