Hua, Loo-Keng, 1911- Starting with the unit circle : background to higher analysis / Loo-keng Hua; translated by Kuniko Weltin. - New York : Springer-Verlag, 1981. - ix, 179 p. : ill. ; 24 cm. Translation of: Ts ung tan wei yuan t an ch i. Subjects--Topical Terms: Mathematical analysis.