Author: Arthemy V. KISELEV
Baecklund autotransformation for the hyperbolic Liouville equation,
Baecklund transformation between the latter equation and the wave
equation, and Baecklund transformation between the Liouville equation and
the scal+-Liouville equation are integrated in nonlocal variables.
For the Liouville equation, shadows of nonlocal symmetries are
obtained, and these shadows are extended up to true nonlocal
symmetries in non-abelian coverings. Nonlocal classical
conservation laws are reconstructed for the latter equation.
10 pages, LaTeX-2e (AmSLaTeX).
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