Memoirs of the American Mathematical Society ; volume 16, issue 1, number 205 (September 1978)
Print version: Nussbaum, Roger D. Differential-delay equations with two time lags. Providence, Rhode Island : American Mathematical Society, [1978] vi, 62 ; 26 cm Memoirs of the American Mathematical Society ; volume 16, issue 1, number 205 (September 1978) ISBN 9780821822050