TY - JOUR AU - Patrizi, Stefania TI - The principal eigenvalue of the $\infty $-laplacian with the Neumann boundary condition JO - ESAIM: Control, Optimisation and Calculus of Variations PY - 2011 SP - 575 EP - 601 VL - 17 IS - 2 PB - EDP-Sciences UR - http://archive.numdam.org/articles/10.1051/cocv/2010019/ DO - 10.1051/cocv/2010019 LA - en ID - COCV_2011__17_2_575_0 ER -