Two further papers appeared in print in 1904, namely The solution of partial differential equations by means of definite integrals, and Certain definite integrals and expansions connected with the Legendre and Bessel functions.
Dalawang karagdagang mga papeles lumabas sa print in 1904, namely Ang solusyon ng bahagyang kaugalian equation sa pamamagitan ng determinado integrals, at tiyak na tiyak integrals at expansions konektado sa Legendre at Bessel function.