@article{CMFD_2013_48_a1,
     author = {E. I. Galakhov},
     title = {Comparison principles for the $p${-Laplacian} operator},
     journal = {Contemporary Mathematics. Fundamental Directions},
     pages = {27--35},
     publisher = {mathdoc},
     volume = {48},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CMFD_2013_48_a1/}
}