Memorandum of understanding on cooperation in the field of studies of terrestrial gamma-flashes, transient luminous events and gamma-ray bursts is signed by principal investigators of space experiments RELEC and AGILE - Mikhail Panasyuk, SINP Director, and the scientist of the Institute of space astrophysics and space physics of the National Astrophysical Institute (IHAF/IASF - Rome, Italy).