@inbook{26260, author = {{Mahnken, Rolf}}, booktitle = {{IUTAM Symposium on Progress in the Theory and Numerics of Configurational Mechanics}}, issn = {{1875-3507}}, title = {{{On Crack Analysis of Functionally Graded Materials with Material Forces}}}, doi = {{10.1007/978-90-481-3447-2_6}}, year = {{2009}}, }