Willy Heins, Sanjoy K. Mitter. Conjugate convex functions, duality, and optimal control problems I: Systems governed by ordinary differential equations. Inf. Sci., 2(2):211-243, 1970. [doi]
@article{HeinsM70,
title = {Conjugate convex functions, duality, and optimal control problems I: Systems governed by ordinary differential equations},
author = {Willy Heins and Sanjoy K. Mitter},
year = {1970},
doi = {10.1016/S0020-0255(70)80050-0},
url = {http://dx.doi.org/10.1016/S0020-0255(70)80050-0},
researchr = {https://researchr.org/publication/HeinsM70},
cites = {0},
citedby = {0},
journal = {Inf. Sci.},
volume = {2},
number = {2},
pages = {211-243},
}