  This paper is extended and broadly generalized version of earlier published
rapid communication, Phys.Rev.E, Vol.58, R 5213 (1998). It also elaborates on
some problems which were left unsolved or just mentioned in Physics Reports
Vol.298, 251 (1998). Applications of the obtained results include (but not
limited to) polymer physics, classical and quantum chaos, fractional Hall
effect, dynamics of textures in liquid crystals and 2+1 gravity. The paper
presents some self contained excerpts from mathematics(not discussed so far in
physics literature)to facilitate the uninterrupted reading of the manuscript.
