Lectures on the calculus of variations / by Gilbert A. Bliss. Bliss, Gilbert Ames, 1876-1951. Calculus of variations. QA315 .B53 517.4 BLL Includes index. "A bibliography for the problem of Bolza" : p. 287-291. Chicago, Ill. : University of Chicago Press, c1946. c1946. 1946 Text ix, 296 p. : eng