Gionfriddo, Mario, Valerio Castelli, and Maria Di Giovanni. “The Spectrum of P(5)(k,10-K)- Designs”. Journal of Progressive Research in Mathematics 15, no. 1 (May 14, 2019): 2578-2584. Accessed December 21, 2024. http://scitecresearch.com/journals/index.php/jprm/article/view/1729.