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Translated from Zapiski Nauchnykh Seminarov POMI, Vol. 326, 2005, pp. 7–8.
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Lodkin, A.A. Preface of the editor. J Math Sci 140, 345 (2007). https://doi.org/10.1007/s10958-007-0442-5
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DOI: https://doi.org/10.1007/s10958-007-0442-5