Dear colleagues, dear students,
please, first of all, let me greet our pedagogues in occasion of "the Date of Teachers". I am writing you in this extraordinary situation when we are working in a very different mode than usual. The distance method of study, leaded since March 10, 2020, due to the threat of spreading of a new coronavirus, is unmatched in its history, and demanded by a need to protect each other from the deadly threat...