@article{JMAG_2003_10_1_a2,
     author = {Yu. P. Virchenko and Yu. A. Tolmacheva},
     title = {Revision of upper estimate of percolation threshold on square lattice},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
     pages = {29--39},
     year = {2003},
     volume = {10},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JMAG_2003_10_1_a2/}
}