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Additional information
Krasnoyarsk Polytechnic Institute. Translated from Teoreticheskaya i Matematicheskaya Fizika, Vol. 83, No. 1, pp. 64–71, April, 1990.
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Bratchikov, A.V. Two-dimensional chiral models with infinite-dimensional symmetry algebras. Theor Math Phys 83, 382–387 (1990). https://doi.org/10.1007/BF01019136
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DOI: https://doi.org/10.1007/BF01019136