Simmons, George F. Differential equations with applications and historical notes [2nd ed.] - Indian rep. of 2nd ed.(1991) - New Delhi McGraw Hill Education (India) 2015 - xxi, 629p. ; 23 cm. ISBN: 9780070530713 0070530718 pbk Subjects--Index Terms: Mathematics MA621;M.Sc. Dewey Class. No.: 515.35 / SIM