CEAS Intensive Japanese I. Grammar Notes , Duisburg (2006).
(PDF data)

CEAS Intensive Japanese I. Hiragana Handbook , Duisburg (2006).
(PDF data)

CEAS Intensive Japanese I. Katakana Handbook , Duisburg (2006).
(PDF data)

CEAS Intensive Japanese I. Introduction to Transcription , Duisburg (2006).
(PDF data)

CEAS Intensive Japanese I. Introduction to Pronunciation , Duisburg (2006).
(PDF data)

CEAS Intensive Japanese I. Introduction to Kanji , Duisburg (2006).
(PDF data)

JSL Advanced Japanese I. Reading and Grammar , Duisburg (2006).
(PDF data)

JSL Advanced Japanese I. Composition and Oral Report , Duisburg (2006).
(PDF data)

Advanced Japanese I. Textbook. , Duisburg (2005).

Advanced Japanese II. Textbook , Duisburg (2004).

Intensive Course Japanese 1 – 4 (revised edition) , Duisburg (2003).

The Present State and Problems of Japanese Language Teaching at the University Freiburg , Tokyo (1980).

The Kokon chomon shu of Tachibana no Narisue, chapter 18 and 19 , Freiburg (1979).

CEAS Intensive Japanese II. Grammar Notes , Duisburg (2007).
(PDF data)

CEAS Intensive Japanese III. Grammar Notes , Duisburg (2007).
(PDF data)

JSL Advanced Japanese II. Reading and Grammar , Duisburg (2007).
(PDF data)

JSL Advanced Japanese II. Composition and Oral Report , Duisburg (2007).
(PDF data)

JSL Advanced Japanese III. Reading and Grammar , Duisburg (2007).
(PDF data)

JSL Advanced Japanese III. Composition and Oral Report , Duisburg (2007).
(PDF data)