VOL A VOILE PLANEUR GLIDING SOARING SAILPLANE: REICHMANN Helmut: Cross-country soaring, Thomson Publications, 1978. COTES Andrew: Jane's World Sailplanes and Motor Gliders, Macdonald and Jane's, 1978. ZANROSSO Giorgio: History and Evolution of the Glider Volume I: 1773-1914, Egida, 1996. COLVILLE LINCOLN Joseph: Soaring on the wind, Northland Press, 1972.