Hvězdicový motor (Czech Wikipedia)

Analysis of information sources in references of the Wikipedia article "Hvězdicový motor" in Czech language version.

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OWERS, Collin A.; GUTTMAN, James J.; DAVILLA, Dr. James J. Salmson aircraft of World War I. Boulder, Colorado: Flying Machine Press, 2001. Dostupné online. ISBN 1-891268-16-3. Kapitola Introduction, s. 1. (anglicky)