As you already know, all the issues of 2020 (the entire vol. 49) are available through EBSCO and GALE. Issue 2/2020 is a Special Issue, in Honour of Professor Vladimir Emelichev on the occasion of His 90th birthday, and issue 4/2020, guest-edited by Dr Naresh Yadhav, is devoted to a series of ample, even if simple, surveys on some of the cutting edge subjects in modern telecommunications and computers. The issues 1/2020 and 3/2020 are the regular issues.

The issues, belonging to the "golden jubilee" volume 50, are also available, namely issue 1/2021, which is again a Special Issue, guest edited by Tomasz Wachowicz, Ewa Roszkowska and Bogumił Kamiński, dedicated to the memory of Gregory E. Kersten, and issuse 2/2021 and 3/2021, which are regular issues. The issue 4/2021 will be out soon. .