Similar title to Aseev, S.M. & Veliov, V.M. (2014). Needle variations in infinite-horizon optimal control. In: Variational and Optimal Control Problems on Unbounded Domains. Eds. Wolansky, G & Zaslavski, AJ, RI: American Mathematical Society (Providence. ISBN 978-1-4704-1077-3 10.1090/conm/619.