They were released indeed. The second volume - in autumn of 2006, the first one - in 2005.
I don't know. Here are the links on ozon.ru:
First volume (Fighter Pillots interviews, vol.1):
http://www.ozon.ru/context/detail/id/2616014/
Second Volume (Fighter Pilots interviews, vol.2):
http://www.ozon.ru/context/detail/id/2853274/
If you haven't seen the volume with Il-2 shturmovik pilots interviews:
http://www.ozon.ru/context/detail/id/2368336/
I've found one link on amazon.com (Il-2 volume):
http://www.amazon.com/Ia-dralsia-IL-...747010&sr=8-29
Probably, you can contact Artyom Drabkin himself or somebody on forum for further information. I think there's his email on his own site:
http://www.iremember.ru/index.php?lang=en
Over here the books costs up to 4 USD.