47 citations · 184 across the 21 of their papers we have counts for
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solv-int1999★ 1 cited
Self-similarity in Spectral Problems and q-special Functions
I. Loutsenko, V. Spiridonov
Similarity symmetries of the factorization chains for one-dimensional differential and finite-difference Schrödinger equations are discussed. Properties of the potentials defined b…
solv-int1997★ 47 cited
Huygens' Principle in Minkowski Spaces and Soliton Solutions of the Korteweg-de Vries Equation
Y. Berest, I. Loutsenko
A new class of linear second order hyperbolic partial differential operators satisfying Huygens' principle in Minkowski spaces is presented. The construction reveals a direct conne…