01087nam0-22003371i-450-9900014325204033210-8218-1375-1000143252FED01000143252(Aleph)000143252FED0100014325220000920d1998----km-y0itay50------baengFour-dimensional integrable hamiltonian systems with simple singular points (topological aspects)L. M. Lerman, Ya. L. UmanskiyProvidence (RI)American Mathematical Societyc1998xii, 177 p.26 cmTranslations of mathematical monographs176Sistemi hamiltoniani514.74Lerman,Lev M.61836Umanskiy,YA. L.ITUNINARICAUNIMARCBK990001432520403321C-29-(17616242MA1MA158F0570HXXFour-dimensional integrable hamiltonian systems with simple singular points (topological aspects374883UNINAING01