@article{AM2_1978__18_136790,
     author = {George E Andrews and Richard Askey},
     title = {A simple proof of {Ramanujan's} summation of the ... .},
     journal = {Aequationes mathematicae},
     pages = {333--337},
     publisher = {mathdoc},
     volume = {18},
     year = {1978},
     zbl = {0401.33002},
     url = {http://geodesic.mathdoc.fr/item/AM2_1978__18_136790/}
}