Bilinear formulas in the theory of the transformation of Laplace
Compositio Mathematica, Volume 6 (1939), p. 93-102
@article{CM_1939__6__93_0,
author = {Hille, Einar},
title = {Bilinear formulas in the theory of the transformation of Laplace},
journal = {Compositio Mathematica},
publisher = {Johnson Reprint Corporation},
volume = {6},
year = {1939},
pages = {93-102},
zbl = {0019.16902},
language = {en},
url = {http://www.numdam.org/item/CM_1939__6__93_0}
}

Hille, Einar. Bilinear formulas in the theory of the transformation of Laplace. Compositio Mathematica, Volume 6 (1939) pp. 93-102. http://www.numdam.org/item/CM_1939__6__93_0/