@article{ISU_2006_6_1_a9,
     author = {M. B. Abrosimov},
     title = {Some questions on minimal extensions of graphs},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {86--91},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2006_6_1_a9/}
}