Fritz Colonius. Viscosity Solutions and Optimal Control (Robert J. Elliott). SIAM Review, 31(3):505, 1989. [doi]
@article{Colonius89-0, title = {Viscosity Solutions and Optimal Control (Robert J. Elliott)}, author = {Fritz Colonius}, year = {1989}, doi = {10.1137/1031106}, url = {https://doi.org/10.1137/1031106}, researchr = {https://researchr.org/publication/Colonius89-0}, cites = {0}, citedby = {0}, journal = {SIAM Review}, volume = {31}, number = {3}, pages = {505}, }