Judica Cordiglia Tecniche Applicate
The Straight Dope:
Were there really "Lost Cosmonauts" stranded in space?
Aulis online
Pietro.org
Dr Sky
For those who are interested in a diametrically opposed opinion to the one expressed in the present web site, we offer a link to James Oberg's article
"Phantoms of Space"
James Oberg returned to the issue of 'Lost Cosmonauts' in his book
"Uncovering Soviet Disasters"
Vladimir Ilyushin's Spaceflight
,
by Paul Tsarinsky
Cosmonauts number Zero
Grechko's encounter