1. Krupp J.A., Murman E.M. AIAA Paper 71–566 (1971)
2. Bailey F.R., Ballhaus W.F. Lecture Notes in Physics, 19 (1972)
3. Schmidt W., Vanino R. Symposium Transsonicum II (1975)
4. van der Vooren J. et al Symposium Transsonicum II (1975)
5. Jameson A. Comm. Pure Appl. Math. Vol XXVII (1974)