@article{CGTM_2014_7_a14,
     author = {Sergey S. Kumkov and Valerii S. Patsko},
     title = {Phenomenon of narrow throats of level sets of value function in~differential games},
     journal = {Contributions to game theory and management},
     pages = {159--180},
     publisher = {mathdoc},
     volume = {7},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CGTM_2014_7_a14/}
}