Numerous web-programmers all over the 'Net who were so kind to share their code and experience.
Krakozyabr ・ もじばけ (Russian) for comprehensive materials on Japanese grammar.
I also want to thank my Japanese friends and especially 真樹 for her useful ideas, invaluable help and support and for that great inspiration she always gives to me. どうもありがとう、真樹先生!^^