Popp, Simona. “Numerical Evaluations of Compressibility Corrections in Wake Flows”. Anal. Numér. Théor. Approx. 7, no. 2 (August 1, 1978): 193–209. Accessed April 11, 2025. https://ictp.acad.ro/jnaat/journal/article/view/1978-vol7-no2-art9.