@article{COCV_2012__18_1_124_0,
     author = {Bressan, Alberto and Wang, Tao},
     title = {Global optimality conditions for a dynamic blocking problem},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {124--156},
     publisher = {EDP-Sciences},
     volume = {18},
     number = {1},
     year = {2012},
     doi = {10.1051/cocv/2010053},
     mrnumber = {2887930},
     zbl = {1258.49030},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv/2010053/}
}