A linking type method to solve a class of sernilinear elliptic
variational inequalities................................................................ 1
Michele Matzeu and Raffaelia Servadei

On the principal eigenvalue of disconjugate BVPs with
L1 -Coefficients ....................................................................... 19
Guy Degia

Fujita's exponent for a semilinear Wave equation with
linear damping ........................................................................ 41
Mokhtar Kirane and Mahmoud Qafsaoui

Existence of a closed geodesic on non-compact Riemannian
manifolds with boundary ............................................................... 51
Rosselia Bartolo, Anna GerTninario and Miguel Sánchez

Infinitely many solutions for Derrick's equation ...................................... 71
Lorenzo Pisani

On a noncompact minimization problem of
Hardy-Sobolev type .................................................................... 81
K. Sandeep




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