617 
47 
REFERENCES 
(1) "Experiments on the Pressure Wave Thrown Out by Submarine 
Explosions," by H.W. Hilliar, Department of Scientific Research and Experi- 
ment, R.E. 142/19, 1919. 
(2) "The Hilliar Gage," by G.K. Hartmann, Ph.D., TMB CONFIDENTIAL 
Report 531, in preparation. 
(3) "Piezoelectricity and Its Applications," by Sir J.J. Thomson, 
Engineering, Vol. 107, Number 2782, April 1919, pp. 543-544. 
(4) "LVI. A Piezoelectric Method of Measuring Explosion Pressures, " 
by David A. Keys, Philosophical Magazine, Vol. 42, Number 250, October 1921, 
rT exe 
(5) "Progress Report on Measurement of Underwater Explosion Pres- 
sures to April 1, 1942," by E.B. Wilson, Jr., and R.H. Cole, OSRD Report 523, 
Serial 226, April 1942. 
(6) “Lehrbuch der Kristallphysik" (Textbook of Crystal Physics), 
by W. Voigt, Teubner, Leipzig, 1928. 
(7) “Piezcelektrizitdt des Quarzes" (Piezoelectricity of Quartz), 
by A. Scheibe, Theodore Steinkopf, Dresden, 1938. 
(8) "Quartz Oscillators and Their Applications," by P. Vigoureux, 
His Majesty's Stationery Office, London, 1939. 
(9) "Le quartz piézoélectrique, et ses applications a la T.S.F." 
(Piezoelectric Quartz and Its Application to Wireless Communication), by 
F. Bedau, Hermann and Company, Paris, 1931. 
(10) International Critical Tables, McGraw-Hill Book Company, New 
York, N.Y., Vol. 6, 1929, pp. 208-212. 
(11) "Bibliography on Piezoelectricity," by W.G. Cady, Proceedings 
of the Institute of Radio Engineers, Vol. 16, 1928, p. 521. 
(12) "A Survey of Piezoelectricity," by W.G. Cady, The American 
Physics Teacher, Vol. 6, 1938, p. 227. 
(13) "Quartz and Tourmaline," by Peter Modrak, The Wireless Engi- 
neer, Vol. 14, Number 162, March 1937, p. 127. 
(14) "Quartz and Tourmaline," by Peter Modrak, The Wireless Engi- 
neer, Vol. 14, Number 163, April 1937, p. 175. 
(15) "Weiterentwicklung des piezoelektrischen Messverfahrens" 
(Progress in Methods of Piezoelectric Measurement), by S. Meurer, Forschung 
auf dem Gebiete des Ingenieurewesens, Vol. 11, 1940, p. 237. 
