LEADER 01076nam a22002655i 4500
001 991002164299707536
007 cr nn 008mamaa
008 121227s1977    gw |    s    |||| 0|eng d
020   $a9783540370246
035   $ab14131304-39ule_inst
040   $aBibl. Dip.le Aggr. Matematica e Fisica - Sez. Matematica$beng
082 04$a510$223
100 1 $aKauffman, Robert M.$0438332
245 14$aThe deficiency index problem for powers of ordinary differential expressions$h[e-book] /$cby Robert M. Kauffman ... [et al.]
260   $aBerlin :$bSpringer,$c1977
300   $a1 online resource (112 p.)
440  0$aLecture Notes in Mathematics,$x0075-8434 ;$v621
650  0$aMathematics
773 0 $aSpringer eBooks
856 40$uhttp://dx.doi.org/10.1007/BFb0064277$zAn electronic book accessible through the World Wide Web
907   $a.b14131304$b03-03-22$c05-09-13
912   $a991002164299707536
996   $aDeficiency index problem for powers of ordinary differential expressions$9262838
997   $aUNISALENTO
998   $ale013$b05-09-13$cm$d@  $e-$feng$ggw $h4$i0