Eleven ways to outwit the law of gravity. (англ.) // Missiles and Rockets : The Missile/Space Weekly. — Washington, D.C.: American Aviation Publications, Inc., June 12, 1961. — Vol.8 — No.24 — P.4.
Van Osten, Richard. Unique Fleet of ASW Study Ships Urged. (англ.) // Missiles and Rockets : The Missile/Space Weekly. — Washington, D.C.: American Aviation Publications, Inc., June 5, 1961. — Vol.8 — No.23 — P.32-33.
