Invited Talks at International Scientific Conferences:

• Attracted by the Fascinating Magnetism of the Sun,
  @ Sohe3: Third Meeting of the Italian Solar and Heliospheric Community, Turin (Italy) October 28-31, 2018.

• Shell Models for Astrophysical Phenomena Descriptions, @ Nonlinear Waves and Chaos 9, La Jolla - San Diego, California - USA, 4-8 March 2013.

• Zonal Shear in a Solar Dynamo Model, @ 2012 AGU Fall Meeting, 3-7 December, - San Francisco, California - USA, Oral session.

• Reduced MHD Turbulence Model of a Coronal Loopi, Special Contribution for a new member of American Astronomical Society
  @ America Astronomical Society 210th Meeting - Honolulu, Hawaii, USA, May 2007.
  Bulletin of the American Astronomical Society, Vol. 38, p.150 (2007)

• Turbulent Model for Solar Flares and Astrophysical Dynamo, @ Grand Challenge Problems in Computational Astrophysics Reunion Conference I,
  Institute for Pure & Applied Mathematics, University of California - Los Angeles, CA - USA, December 2006.

• Large Amplitude Velocity Fluctuations as Precursor of Nanoflares in Solar Coronal Loops, @ PCA Culminating Conference, Institute for Pure & Applied Mathematics
  University of California - Lake Arrowhead, CA - USA, May 2005.

• Large Amplitude Velocity Fluctuations as Precursor of Nanoflares in Solar Coronal Loops,
  @ Solar Coronal Loops Workshop - Palermo - Italy, September 2004.

Invited Colloquia at International Institutes and Universities:

• Small-scale Turbulence as Regenerating Source of the Stellar Magnetic Fields, @ Department of Physics and Astronomy, Georgia State University - Atlanta GA - USA, February 2017.

• Velocity Fluctuations in Coronal Loops as Flare Drivers, @ Naval Research Laboratory - Washington DC - USA, July 2006.

• Reduced MHD Shell Model for Turbulence in Coronal Loops, @ Jet Propulsion Laboratory - NASA - Pasadena CA - USA, May 2005.