@article{CGTM_2009_2_a27,
     author = {Leon A. Petrosyan and Nikolay A. Zenkevich},
     title = {Conditions for {Sustainable} {Cooperation}},
     journal = {Contributions to game theory and management},
     pages = {344--354},
     publisher = {mathdoc},
     volume = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CGTM_2009_2_a27/}
}