@article{JSFU_2011_4_4_a12,
     author = {Egor A. Timoshenko},
     title = {Projective modules over the ring of pseudorational numbers},
     journal = {\v{Z}urnal Sibirskogo federalʹnogo universiteta. Matematika i fizika},
     pages = {541--550},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/JSFU_2011_4_4_a12/}
}