000 00549pam a2200181a 44500
008 160408b xxu||||| |||| 00| 0 eng d
020 _a3718652188
082 _a530.15
_bK891P
100 _aKrichever, I.M.
245 1 _aPERTURBATION THEORY IN PERIODIC PROBLEMS FOR TWO-DIMENSIONAL INTEGRABLE SYSTEMS
260 _a
_b
_c
440 _aSoviet Scientific Reviews,Sec.C. Mathematical Physics Reviews
_v
650 _aPerturbation (Mathematics)
650 _aMathematical Physics
700 _aS.P.Novikov
964 _gCIRC
997 _aA115299 C
999 _c317397
_d317397