@article{Stepp_2007 author = {Herbert Stepp and Tobias Beck and Thomas Pongratz and Thomas Meinel and Friedrich-Wilhelm Kreth and Jorg Ch. Tonn and Walter Stummer}, title = {ALA and Malignant Glioma: Fluorescence-Guided Resection and Photodynamic Treatment}, journal = {Journal of Environmental Pathology, Toxicology and Oncology}, issn = {0731-8898}, year = {2007}, volume = {26}, number = {2}, pages = {157--164} }