@article{00022393, title = {An optimal control problem in economics.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {14}, year = {1991}, pages = {537-544}, doi = {10.1155/S016117129100073X}, zbl = {0755.90017}, language = {en}, url = {http://dml.mathdoc.fr/item/00022393} }
Highfill, Jannett; McAsey, Michael. An optimal control problem in economics.. International Journal of Mathematics and Mathematical Sciences, Tome 14 (1991) pp. 537-544. doi : 10.1155/S016117129100073X. http://gdmltest.u-ga.fr/item/00022393/