TY - JOUR T1 - On Certain Definite Integrals. No. 15 JF - Proceedings of the Royal Society of London (1854-1905) VL - 42 SP - 477 EP - 483 PY - 1887/01/01/ UR - http://dx.doi.org/10.1098/rspl.1887.0104 M3 - doi:10.1098/rspl.1887.0104 AU - Russell, W. ER -