Integrable systems selected papers. অনুযায়ী Dikki, L. A., Dubrovin, B. A., Gelfand, I. M., Krasilshchik, I. S., krichever, I. M., Kupershmidt, B. A., Matveer, V. B., Novikov, S. P., Vinogradov, A. M., Yusin, B. V.