Commentation of sections 6b and 6c German Income Tax Act, in Herrmann/Heuer/Raupach, Commentary of German Income Tax Act and German Corporate Income Tax Act
Commentation of sections 3b, 3c, 3d, 3e, sections 22f and 25e, and sections 18i, 18j, 18k German VAT Act, in Rau/Dürrwächter, Commentary of German VAT Act
Various articles in tax magazines and lectures on German tax topics
