| Special Issue on Equilibrium Optimization | 
																
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																	| Words from the guest editors: Christian Kanzow and Oliver Stein | 
																
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																	| S. Dempe and S. Franke Bilevel programming: Stationarity and stability
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																	| D. Dorsch, H.Th. Jongen and V. Shikhman Local models in equilibrium optimization
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																	| F. Facchinei, C. Kanzow, and S. Sagratella QVILIB: A library of quasi-variational inequality test problems
 
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																	| M. Hintermüller and T. Surowiec A PDE-constrained generalized Nash equilibrium problem with
   pointwise control and state constraints
 
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																	| C. Kirches, A. Potschka, H.G. Bock and S. Sager A parametric active-set method for QPs with vanishing
   constraints arising in a robot motion planning problem
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																	| L.A. Parente, P.A. Lotito, A.J. Rubiales and M.V. Solodov Solving net constrained hydrothermal Nash-Cournot equilibrium
   problems via the proximal decomposition method
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																	| S. Steffensen Semismooth Newton method for affine differential variational inequalities
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																	| Regular Papers 
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																	| H. Yamamura, T. Okuno, S. Hayashi and M. Fukushima A smoothing SQP method for mathematical programs with linear second-order cone complementarity constraints
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																	| W. Zhou A Gauss-Newton-based BFGS method
for symmetric nonlinear least squares problems
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