Tolong jelaskan mengenai Catatan dari Laika

Angliss, Sarah and Uttley, Colin. Science in the Dock: The man who trained the space dogs. Diakses pada tanggal 28 Januari 2005.

Anon. An Internet memorial to Laika . Diakses pada tanggal 1 September 2004.

Dubbs, Chris and Burgess, Colin. Animals In Space: From Research Rockets to the Space Shuttle, 2007.

Grahn, Sven. Sputnik-2, more news from distant history. Diakses pada tanggal 1 September 2004.

Mars Exploration Rover Mission: Opportunity arrives at "Vostok" . Diakses pada tanggal 24 Maret 2005.

NSSDC Master Catalog: Sputnik II  (2003-11-26). Diakses pada tanggal 1 September 2004.

On This Day, November 3 – 1957: Russians launch dog into space. BBC News. Diakses pada tanggal 1 September 2004.

Soviet Fires New Satellite, Carrying Dog; Half-Ton Sphere Is Reported 900 Miles Up (3 November 1957). New York Times.

Whitehouse, David (28 Oktober 2002). First dog in space died within hours, BBC News Online.

Zak, Anatoly (3 November 1999). The True Story of Laika the Dog. space.com.