The present source code was written to reproduce the original results from

"Gravitational waves in general relativity, VII. Waves from axi-symmetric isolated system"
1962 - Bondi, Hermann  and Van der Burg, M. G. J.  and Metzner, A. W. K.

and is intended to be used with maxima. The scripts require a common lisp
implementation supporting UTF-8 due to the use of greek characters.

Maxima can be downloaded from:
https://maxima.sourceforge.io/