Hans-Georg Retzko
- A Comparison Of The Townscape Of The Regional City Between Japan And Germany For The Promotion Of Identity Of Japanese Cities. In The Case Of Morioka And Darmstadt. Dans: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1991, n. 431 (juillet 1991). (1991):
- New Developments In Urban And Regional Traffic And Transport Planning. A Report From Germany. Dans: 土木学会論文集 (Doboku Gakkai rombunshū), v. 1994, n. 482 (janvier 1994). (1994):