
The work of Prof. Hitoshi Kodama and Prof. Mokoto Shimizu has resulted in the following publications:
Frisian Grammar with cassette tape (1992) by Hitoshi Kodama

Dutch Grammar (2004) by Makoto Shimizu, who speaks Frisian and Dutch
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Frisian-Japanese Dictionary (2004) by Hitoshi Kodama 
In 1993 a Frisian celebration took place in the Province Hall in Ljouwert/Leeuwarden (1993)
A Frisian party in Japan (1994)