Berdysheva, Elena E., and Szilárd Gy. Révész. “Delsarte’s Extremal Problem and Packing on Locally Compact Abelian Groups”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 24, no. 2 (June 26, 2023): 1007-1052. Accessed February 20, 2026. https://journals.sns.it/index.php/annaliscienze/article/view/5763.