Every reference with a DOI in the deposited reference list resolved to a known
work in Crossref or DataCite at the dated check, and none carried a retraction,
withdrawal, or removal notice.
The 10 references without a DOI — listed, not checked
no DOI — not checkedV. E. Zakharov and A. B. Shabat, "A refined theory of two-dimensional self-focussing and one-dimensional self-modulation of waves in nonlinear media," Zh. Éksp. Teor. Fiz.,61, No. 1, 118–134 (1971).
no DOI — not checkedV. E. Zakharov and A. B. Shabat, "On the interaction of solitons in a stable medium," Zh. Éksp. Teor. Fiz.,64, No. 5, 1627–1639 (1973).
no DOI — not checkedV. E. Zakharov, "The method of the inverse scattering problem," in: Theory of Elastic Media with Microstructure, edited by I. A. Kukin [in Russian], Nauka, Moscow (1974).
no DOI — not checkedA. B. Shabat, "Concerning the Korteweg—de Vries equation," Dokl. Akad. Nauk SSSR,211, No. 6, 1310–1313 (1973).
no DOI — not checkedV. E. Zakharov, "On the problem of one-dimensional stochastized circuits of nonlinear oscillators," Zh. Éksp. Teor. Fiz.,65, No. 1, 219–225 (1973).
no DOI — not checkedB. B. Kadomtsev and V. I. Petviashvili, "On the stability of solitary waves in weakly dispersive media," Dokl. Akad. Nauk SSSR,192, No. 4, 753–756 (1970).
no DOI — not checkedV. E. Zakharov and S. V. Manakov, "On resonance interaction of wave packets in nonlinear media," ZhÉTF Pis. Red.,18, No. 7, 413 (1973).
no DOI — not checkedN. Bloembergen, Nonlinear Optics, W. A. Benjamin (1965).
no DOI — not checkedV. E. Zakharov, L. A. Takhtadzhyan, and L. D. Faddeev, "Complete description of the solutions of the ‘sin—gordon’ equation," Dokl. Akad. Nauk SSSR (1974).
no DOI — not checkedS. V. Manakov, "On a theory of the two-dimensional stationary self-focussing electromagnetic waves," Zh. Éksp. Teor. Fiz.,65, 505–516 (1973).
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