About the book: year / First edition 2004, second edition 2011, slightly edited (several small additions in various places, reflecting some discussions of it on the Internet ), and most importantly, better proofread than the original version of 2004. Primary text location: Google site dedicated to this book: http://sites.google.com/site/voskr1993/Extra text locations: Samizdat. ru http://samlib.ru/e/esher_e/, as well as the personal author.