00990nam a2200313 i 450099100093355970753620020507180119.0930511s1990 us ||| | eng 1207519556b1077774x-39ule_instLE01304521ExLDip.to Matematicaeng515AMS 05-01AMS 05-XXAMS 05A15AMS 60C05QA353.G44W55Wilf, Herbert S.12671Generatingfunctionology /Herbert S. WilfBoston :Academic Press,1990viii, 184 p. ;23 cm.Generating functions.b1077774x21-09-0628-06-02991000933559707536LE013 05-XX WIL11 (1990)12013000072753le013-E0.00-l- 02020.i1087681928-06-02Generatingfunctionology622564UNISALENTOle01301-01-93ma -engus 01