<?xml version="1.0"?>
<coauthors author="A. I. Grinevich" urlpt="g/Grinevich:A=_I=">
<author urlpt="m/Markovtsev:D=_A=" count="1">D. A. Markovtsev</author>
<author urlpt="r/Rubanov:V=_V=" count="1">V. V. Rubanov</author>
</coauthors>

