Recurrence Formulae for the Coefficients of Modular Forms and Congruences for the Partition Function and for the Coefficients of j(τ), (j(τ) - 1728)^12 and (j(τ))^13 ., volume=23, url=https://journals.msp.org/mscand/article/view/2449, DOI=10.7146/math.scand.a-10904, journal=Mathematica Scandinavica, author=Klove, Torleiv, year=1968, month=Jun., pages=133–159