Sonopoi (Estonian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sonopoi" in Estonian language version.

refsWebsite

Global rank Estonian rank

1hydro-international.com

low place

low place

1navairdevcen.org

low place

low place

212^th place

460^th place

1books.google.com

3^rd place

23^rd place

5^th place

76^th place

books.google.com

Anonymous, "Ocean's Depth Measured By Radio Robot," Popular Mechanics, December 1938, pp. 828-830.

hydro-international.com

Theberge, Alfred E., "System Without Fixed Points: Development of the Radio-Acoustic Ranging Navigation Technique (Part 1)," hydro-international.com, December 2, 2009.

navairdevcen.org

EVOLUTION OF THE SONOBUOY.pdf Holler, Roger A., "The Evolution of the Sonobuoy From World War II to The Cold War," U.S. Navy Journal of Underwater Acoustics, January 2014, p. 323.^{[alaline kõdulink]}

noaa.gov

celebrating200years.noaa.gov

celebrating200years.noaa.gov Top Tens: Breakthroughs: Hydrographic Survey Techniques: Acoustic Survey Methods: Radio Acoustic Ranging

worldcat.org

Terraine, John (1985). The Right of the Line: The Royal Air Force in the European War, 1939–1945. London: Hodder & Stoughton. ISBN 978-0-340-26644-1. OCLC 13125337.