Upward, Chris (1997). "Spelling Reform in German"(PDF). Journal of the Simplified Spelling Society. J21: 22–24, 36. Archived from the original(PDF) on 2015-09-05.
Upward, Chris (1997). "Spelling Reform in German"(PDF). Journal of the Simplified Spelling Society. J21: 22–24, 36. Archived from the original(PDF) on 2015-09-05.