Isoperimetric inequalities for eigenvalues of the Laplacian and the Schrödinger operator Rafael D. BenguriaHelmut LindeBenjamín Loewe Articles Open access 10 January 2012 Pages: 1 - 56
Ramanujan’s modular equations and Weber–Ramanujan class invariants G n and g n Nipen Saikia Articles Open access 08 December 2011 Pages: 205 - 223