01076nam a22002655i 4500991002164299707536cr nn 008mamaa121227s1977 gw | s |||| 0|eng d9783540370246b14131304-39ule_instBibl. Dip.le Aggr. Matematica e Fisica - Sez. Matematicaeng51023Kauffman, Robert M.438332The deficiency index problem for powers of ordinary differential expressions[e-book] /by Robert M. Kauffman ... [et al.]Berlin :Springer,19771 online resource (112 p.)Lecture Notes in Mathematics,0075-8434 ;621MathematicsSpringer eBookshttp://dx.doi.org/10.1007/BFb0064277An electronic book accessible through the World Wide Web.b1413130403-03-2205-09-13991002164299707536Deficiency index problem for powers of ordinary differential expressions262838UNISALENTOle01305-09-13m@ -enggw 40