@article{PM_2008_2008_1_a3,
     author = {Harjulehto, P. and  H\"ast\"o, P.},
     title = {Sobolev inequalities with variable exponent attaining the values 1 and n},
     journal = {Publicacions matem\`atiques},
     pages = {347-363},
     publisher = {mathdoc},
     volume = {52},
     number = {2},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_2008_2008_1_a3/}
}