Geodesic
Finite-gap solutions of the Bullough–Dodd–Zhiber–Shabat equation
Teoretičeskaâ i matematičeskaâ fizika, Tome 82 (1990) no. 1, pp. 155-160 Cet article a éte moissonné depuis la source Math-Net.Ru

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Explicit expressions in terms of Prym theta functions are obtained for finite-gap solutions of the Bullough–Dodd–Zhiber–Shabat equation, and conditions that ensure reality and nonsingularity of these finite-gap solutions are established. 
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I. Yu. Cherdantsev; R. A. Sharipov. Finite-gap solutions of the Bullough–Dodd–Zhiber–Shabat equation. Teoretičeskaâ i matematičeskaâ fizika, Tome 82 (1990) no. 1, pp. 155-160. http://geodesic.mathdoc.fr/item/TMF_1990_82_1_a15/

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