000 003730000a22001330004500
001 EST
003 517.5/517.948(076.2) / T37
004 M
006 m
100 _aTitchmarsh, E. C.
245 _aEigenfunction expansions: associated with second order differential equations
650 _a<FUNCIONES><ECUACIONES DIFERENCIALES><ECUACIONES FUNCIONALES>
999 _c16260
_d16260