In conclusion, we would like to express our special appreciation and gratitude
for the help in the preparation of the manuscript for the publishing by the
employees of Magic of Light, Ltd., A. V. Madiarov, A. A. Korolenko, A. A. Kazak,
S. P. Zabreiko, A. V. Krivko-Krasko, secretaries S. I. Korotkova, O. I. Kocherga,
K. P. Ionayskaite, M. G. Potashova and V. A. Lakhanskaya.
Minsk, Belarus
Leonid V. Tanin
Andrei L. Tanin
Preface
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