TY - JOUR T1 - A Simple Extension of Fourier's Integral Theorem and Some Physical Applications, in Particular to the Theory of Quanta JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 99 IS - 701 SP - 462 EP - 471 PY - 1921/09/01/ UR - http://dx.doi.org/10.1098/rspa.1921.0061 M3 - doi:10.1098/rspa.1921.0061 AU - Fowler, R. ER -