@techreport{CGrossRKrause2009a, author = {C. Gro{\ss} and R. Krause}, title = {A new Class of Non--linear Additively Preconditioned Trust--Region Strategies: Convergence Results and Applications to Non-linear Mechanics}, year = 2009, institution = {Institute for Numerical Simulation, University of Bonn}, number = {904}, month = {03}, inspreprintnum = {0904}, type = {INS preprint}, pdf = {http://krause.ins.uni-bonn.de/themen/getBibPdf.php?item=CGrossRKrause2009a.pdf 1}, note = {Submitted to Math. Comput.} }