@article{IVM_1968_11_a1,
     author = {I. A. Bakhtin and G. M. Goncharov},
     title = {Criteria for the extendability of positive linear functionals.},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {12--18},
     publisher = {mathdoc},
     number = {11},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1968_11_a1/}
}