1. Higher Transcendental Functions;Bateman,1953
2. Ramanujanʼs Notebooks, part II;Berndt,1989
3. Domains of validity for some of Ramanujanʼs continued fraction formulas;Jacobsen;J. Math. Anal. Appl.,1989
4. Continued Fractions with Applications;Lorentzen,1992
5. Notebooks (2 volumes);Ramanujan,1957