C O N T E N T S
ORIGINAL SCIENTIFIC PAPERS
Ivan Gutman
Spectrum and energy of the Sombor matrix 551-561
Akbar Dehghan Nezhad, Ahmadreza Forough,
Nikola Mirkov, Stojan Radenović
A new version of the results of Un–hypermetric spaces 562-577
Slavko J. Pokorni
Current state of the application of artificial intelligence in
reliability and maintenance 578-593
Milan N. Končar, Odil I. Anarbaev, Dobrivoje R. Mutavdžić,
Goran M. Lazić, Željko M. Jokić
Improvement of safety measures by applying a technical solution
on the M-80A infantry combat vehicle 594-606
Leonid I. Gretchikhin
Positive and negative role of negative ions in cosmic exploration 607-637
Nebojša V. Nikolić
On new military technologies and concepts explored from
the Syrian conflict experience 638-655
REVIEW PAPERS
Nicola Fabiano
Quantum electrodynamics divergencies 656-675
Komlen G. Lalović, Mitko Z. Bogdanoski
Java GUI aplication for comparing the levels of
biometric security - fingerprint vs. iris 676-686
Slađan M. Svrzić, Petar Jovanoski
Description of the TETRA 1 technology and standard for modern
digital trunking systems of functional mobile radio communications 687-726
LETTERS TO THE EDITOR
David D. Pokrajac
Comments on the article “Monitoring COVID-19 is like instrument flying” 727-733
Petar V. Kočović
Answers to the Comments on the article “Monitoring COVID-19 is
like instrument flying” submitted by David D. Pokrajac 734-748
MODERN WEAPONS AND MILITARY EQUIPMENT 749-761
Dragan M. Vučković
CALL FOR PAPERS AND INSTRUCTIONS FOR AUTHORS 762-778
