@article{Bereuter_2004, title = {Impact Faktoren von Open Access Journalen. }, author = {Bereuter, Wolfgang and Bereuter, Thomas L.}, journal = {GMS Medizin, Bibliothek, Information}, number = {2}, pages = {18-19}, volume = {4}, year = {2004}, keywords = {Open Access Philadelphia Impact Factor Erschlie\ssung Zeitschrift Institute for Scientific Information (ISI)} }