@Misc{ CocGarSpi16, author = { Coclite, Giuseppe Maria and Garavello, Mauro and Spinolo, Laura Valentina }, title = { Optimal strategies for a time-dependent harvesting problem }, journal = { }, year = { 2016 }, pages = { 44 }, URL = { http://cvgmt.sns.it/paper/2944/ }, note = { cvgmt preprint} }