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Some browsers have problems when they talk with some HTTP servers. As a result the PDF file you receive may be broken. There are three mirrors of this site: at http://science-forum.ru/value/, at http://svetlov.timacad.ru/ and at http://nsvetlov.narod.ru . If you receive broken PDFs from one of them just try another (as for today it was always helpful). If all the mirrors send broken PDFs then please request the desired paper via e-mail (please do not request more than one or two papers at once!).

Some PDF files are supplied without embedded fonts. If you face problems with fonts, one of the following procedures may help.

• To read formulas correctly, you should have installed the following fonts: Fences Plain, MT Extra, Symbol, Euclid Math One and Euclid Math Two (under Microsoft Windows), or their equivalents. Please contact your system administrator if these fonts are not available.
• To correctly read/print Russian fonts, download this font set (330548 bytes) and install all the fonts contained in the self-extracting compressed file (for Microsoft Windows family operating systems).