@article{CM_1940__7__340_0,
     author = {Erd\'elyi, A.},
     title = {Transformation of a certain series of products of confluent hypergeometric functions. {Applications} to {Laguerre} and {Charlier} polynomials},
     journal = {Compositio Mathematica},
     pages = {340--352},
     publisher = {Johnson Reprint Corporation},
     volume = {7},
     year = {1940},
     zbl = {0022.02005},
     language = {en},
     url = {http://www.numdam.org/item/CM_1940__7__340_0/}
}