@article{JEMS_2010_12_3_a1,
     author = {Dario D. Monticelli},
     title = {Maximum principles and the method of moving planes for a class of degenerate elliptic linear operators},
     journal = {Journal of the European Mathematical Society},
     pages = {611--654},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {2010},
     doi = {10.4171/jems/210},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/210/}
}