The Fredholm alternative for the $p$-Laplacian: bifurcation from infinity, existence and multiplicity P. DrabekP. GirgPeter TakacM. Ulm 35J6535P3047J1047J15the $p$-Laplaciannonlinear Fredholm alternativebifurcation from infinityexistence and multiplicity results Indiana University Mathematics Journal 2004 text pdf 10.1512/iumj.2004.53.2396 10.1512/iumj.2004.53.2396 en Indiana Univ. Math. J. 53 (2004) 433 - 482 state-of-the-art mathematics http://iumj.org/access/