1. K. Aki, “A Probabilistic Synthesis of Precursory Phenomena,” in Earthquake Prediction, Ed. by D. W. Simpson and P. G. Richards (American Geophysical Union, Washington D.C., 1981), pp. 566–574.
2. V. Barrile, M. Cacciola, S. D’Amico, et al., “Radial Basis Function Neural Networks to Foresee Aftershocks in Seismic Sequences Related to Large Earthquakes,” in Lecture Notes in Computer Science, 2006, Vol. 4233,Part II, pp. 909–916; ISSN 0302-9743, doi:10.1007 /11893257.
3. G. Bussetti, Esercitazioni pratiche di fisica (Levrotto & Bella, Libreria Editrice Universitaria, 1983).
4. D. Caccamo., F. M. Barbieri, S. D’Amico, et al., “The Temporal Series of the New Guinea 29 April 1996 Aftershock Sequence,” Izvestyia-Phys. Earth Plan. Int. 153(4), 175–180 (2005).
5. D. Caccamo, F. Barbieri, S. D’Amico, et al., “Umbria-Marche Sequence (Central Italy): a Study on Its Aftershock Sequence,” Boll. Geof. Toer. e Appl. 48(4), 385–398 (2007a).