00427nas a22001217a 4500008004100000022001400041245005300055260005800108300000700166362000700173650001600180856010900196190206s9999    xx            000 0 und d  a1064-5616  aRussian Academy of Sciences. Sbornik Mathematics  aProvidence, R.I.bAmerican Mathematical Societyc1993  av.  a    aMathematics  uhttps://iopscience.iop.org/journal/1468-4802y1993-1995 Russian Academy of Sciences. Sbornik Mathematics