During the time period between 1903 and 1914, Ramanujan worked in almost complete isolation in India. Hardy strongly urged that Ramanujan's notebooks be published and edited. In 1977, Berndt began the tasks of editing Ramanujan's notebooks.
16 q-Series and Theta-Functions.- 17 Fundamental Properties of Elliptic Functions.- 18 The Jacobian Elliptic Functions.- 19 Modular Equations of Degrees 3, 5, and 7 and Associated Theta-Function Identities.- 20 Modular Equations of Higher and Composite Degrees.- 21 Eisenstein Series.- References.