en Courant, Richard; Friedrichs, Kurt Otto () [unabridged republication of the original edition of 1948]. Supersonic Flow and Shock Waves. Applied mathematical sciences (ed. 5th). Springer-Verlag New York Inc. pp. 24. ISBN0387902325. OCLC44071435.
en Courant, Richard; Friedrichs, Kurt Otto () [unabridged republication of the original edition of 1948]. Supersonic Flow and Shock Waves. Applied mathematical sciences (ed. 5th). Springer-Verlag New York Inc. pp. 24. ISBN0387902325. OCLC44071435.