Levialdi, S., Maggiolo-Schettini, A., Napoli, M., Uccella, G., "Considerations on a Language for Picture Processing" pp121-126

Proc. of the IV Polish-Italian Symposium on Patter (1978) Proc. of the IV Polish-Italian Symposium on Pattern Recognition of Biomedical Objects, Ischia, Italy (October 4-9, 1978) Quaderni de "La Ricerca Scientifica" del CNR 108  

Languages mentioned PIXAL {1981}