Numerical Gradients for Shape Optimization Based on Embedding Domain Techniques. - Karl Kunisch; Gunther H. Peichl (Comput. Optim. Appl., 2001)

Shape Optimization and Fictitious Domain Approach for Solving Free Boundary Problems of Bernoulli Type. - Jaroslav Haslinger; Tomás Kozubek; Karl Kunisch; Gunther H. Peichl (Comput. Optim. Appl., 2003)

Projected Schur complement method for solving non-symmetric systems arising from a smooth fictitious domain approach. - Jaroslav Haslinger; Tomás Kozubek; Radek Kucera; Gunther H. Peichl (Numer. Linear Algebra Appl., 2007)

The Immersed Interface Technique for Parabolic Problems with Mixed Boundary Conditions. - François Bouchon; Gunther H. Peichl (SIAM J. Numer. Anal., 2010)