@article{EJDE_2007__2007__a137,
     author = {Bieske,  Thomas},
     title = {A comparison principle for a class of subparabolic equations in {Grushin-type} spaces},
     journal = {Electronic journal of differential equations},
     year = {2007},
     volume = {2007},
     zbl = {1112.35012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a137/}
}