Spiegel, Murray R …[et al.] Complex variables [2nd ed.] - Indian rep. of 2nd ed., 2009, 2011 - New Delhi Tata Mc Graw Hill Education 2013 - xiii, various pages ; 24cm. ISBN: 9780070085381 0070085382 Subjects--Topical Terms: Mathematics Dewey Class. No.: 515.94 / SPI