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2. C. Abagnale, PhD thesis, Sviluppo di un sistema di attuazione variabile VVA elettroidraulico per motori pluricilindrici, Università degli Studi di Napoli Federico II, 2009
3. C. Abagnale, A. Gimelli, M. Migliaccio, O. Pennacchia, Distribuzione variabile su motori alternativi a c.i.: VVA meccanici a 3 e a 4 elementi, 65° Congresso ATI, Cagliari, settembre 2010
4. C. Abagnale, M. Migliaccio, O. Pennacchia, Design of a new mechanical variable valve actuation system for motorcycle engines ESDA2012-82317, in Proceedings of the ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis, Nantes, France, 2–4 July 2012
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