@article{TM_2014_287_a17,
     author = {M. V. Zhitlukhin and A. N. Shiryaev},
     title = {On the existence of solutions of unbounded optimal stopping problems},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {310--319},
     publisher = {mathdoc},
     volume = {287},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2014_287_a17/}
}