@article{EMJ_2011_2_1_a3,
     author = {G. A. Chechkin and Yu. O. Koroleva and L.-E. Persson and P. Wall},
     title = {A new weighted {Friedrichs-type} inequality for a~perforated domain with a~sharp constant},
     journal = {Eurasian mathematical journal},
     pages = {81--103},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2011_2_1_a3/}
}