@article{VSGU_2011_8_a20,
     author = {O. A. Efremova and I. V. Prokopenko and N. V. Prokhorova},
     title = {Heavy metals in soil cover of {Ulianovsk} city children park},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {173--178},
     publisher = {mathdoc},
     number = {8},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2011_8_a20/}
}