Title:HONORARY ISSUES DEDICATED TO THE 60-TH ANNIVERSARY OF PROFESSOR IHOR STASYUK'S BIRTHDAY

On 23 September 1998, Professor Ihor Stasyuk will celebrate his 60th birthday. On this occasion the Editorial Board of "Condensed Matter Physics" as well as his collegues and collaborators wish to honour him with a collection of scientific papers. Many researchers from Ukraine and around the world answered positively to the request of contributing their papers to the celebration issues. To these we express our sincere gratitude. The original papers and reviews widely cover the fields of theoretical physics and condensed matter theory which are of Professor Ihor Stasyuk's scientific interest. Two issues of "Condensed Matter Physics" (1998, vol. 1, No 1(13), 2(14)) contain articles on the theory of systems with strong electron correlations, high-temperature superconductors, selected problems of theoretical physics and condensed matter theory, hydrogen-bonded systems and ferroelectrics, as well as the general issues of the solid state theory. We were not able to include into this collection of papers scientific works (except for two papers) by representatives of a large scientific school of Professor Stasyuk.