Contractibility of level sets of functionals associated with some elliptic boundary value problems and applications Zhaoli LiuShujie Li Original article Pages: 133 - 170
Superharmonic functions in the Heisenberg group: estimates and Liouville theorems Isabeau Birindelli Pages: 171 - 185
A strong maximum principle for a class of non-positone singular elliptic problems Lucio DamascelliFilomena PacellaMythily Ramaswamy Original article Pages: 187 - 196
Basic theory for a diffusion-absorption equation in an inhomogeneous medium Guillermo ReyesAlberto Tesei Original article Pages: 197 - 222
On the first eigenfunction of a perturbed Hardy-Sobolev operator K. Sandeep Original article Pages: 223 - 253