@article{ZNSL_2004_312_a7,
     author = {V. A. Vasil'ev},
     title = {Contractual $M$-core and equilibrium allocations},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {55--68},
     publisher = {mathdoc},
     volume = {312},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2004_312_a7/}
}