Ince, E.L..
Integration of odinary differential equations / - Reprinted 1967 / - Edinburgh : Oliver & Boyd , 1987 - p.146,vii :
Mathematics
B331 / J6I
Integration of odinary differential equations / - Reprinted 1967 / - Edinburgh : Oliver & Boyd , 1987 - p.146,vii :
Mathematics
B331 / J6I