1. The inverse backscattering problem in three dimensions

   • G. Eskin
   • J. Ralston

   OriginalPaper Pages: 169 - 215

2. An estimate from above of the number of periodic orbits for semi-dispersed billiards

   • Luchezar Stojanov

   OriginalPaper Pages: 217 - 227

3. Classical and quantum scattering on a spinning cone

   • P. de Sousa Gerbert
   • R. Jackiw

   OriginalPaper Pages: 229 - 260

4. The factorization of a polynomial defined by partitions

   • R. P. Langlands

   OriginalPaper Pages: 261 - 284

5. A new proof of localization in the Anderson tight binding model

   • Henrique von Dreifus
   • Abel Klein

   OriginalPaper Pages: 285 - 299

6. Twisted non-Abelian determinants on Riemann supersurfaces

   • Kenichiro Aoki
   • Vipul Periwal

   OriginalPaper Pages: 301 - 306

7. An analogue of P.B.W. theorem and the universalR-matrix forU _h sl(N+1)

   • Marc Rosso

   OriginalPaper Pages: 307 - 318

8. New Weyl groups forA ₁ ⁽¹⁾ and characters of singular highest weight modules

   • V. K. Dobrev

   OriginalPaper Pages: 319 - 336