Bibliographie der deutschen Sprach- und Literaturwissenschaft (BDSL)

The Bibliographie der deutschen Sprach- und Literaturwissenschaft (Bibliography of German Language and Literature Research) was started in 1957 by Hanns W. Eppelsheimer of the University of Frankfurt and continued by Clemens Köttelwesch. It is the largest and most authoritative index of published research on all areas of German philology. Long available as a hard-to-use CD-ROM, it went online earlier in 2004 as a joint project of the Frankfurt University Library and the German publisher V. Klostermann.