OCR4all - An Open-Source Tool Providing a (Semi-)Automatic OCR Workflow for Historical Printings. - Christian Reul; Dennis Christ; Alexander Hartelt; Nico Balbach; Maximilian Wehner; Uwe Springmann; Christoph Wick; Christine Grundig; Andreas Büttner; Frank Puppe (CoRR, 2019)

OMMR4all - ein semiautomatischer Online-Editor für mittelalterliche Musiknotationen. - Christoph Wick; Alexander Hartelt; Frank Puppe (DHd, 2020)

Lyrics Recognition and Syllable Assignment of Medieval Music Manuscripts. - Christoph Wick; Alexander Hartelt; Frank Puppe (ICFHR, 2020)

Contour-Based Segmentation of Historical Printings. - Norbert Fischer; Alexander Gehrke; Alexander Hartelt; Markus Krug 001; Frank Puppe (KI, 2020)

Optical Medieval Music Recognition Using Background Knowledge. - Alexander Hartelt; Frank Puppe (Algorithms, 2022)

Line-Level Layout Recognition of Historical Documents with Background Knowledge. - Norbert Fischer; Alexander Hartelt; Frank Puppe (Algorithms, 2023)