“…In the case in which f (t) is a power, say f (t) = |t| p−2 t, the problem is known as Hénon's equation (see [10]). A seminal paper of Smets, Su and Willem [1] showed that, for large α's, there is a breaking of symmetry and a new, non radial, solution appears. After that, much work has been made to study these non radial solutions: multiplicity, shape, asymptotic behavior.…”