@conference {Heers-et-al-98a, title = {A class of parallel algorithms for nonlinear variational image segmentation}, booktitle = {Proc. Noblesse Workshop on Non{\textendash}Linear Model Based Image Analysis (NMBIA{\textquoteright}98)}, year = {1998}, month = {July, 1{\textendash}3}, address = {Glasgow, Scotland}, author = {Heers, J. and Schn{\"o}rr, C. and Stiehl, H.S.} }