De Jager, E. M.
Spectral theory and asymptotics of differntial equations E. M. De Jager - Amsterdam: North-Holland, 1974. - 208p.
eng
Calculas
515.35 / DES
Spectral theory and asymptotics of differntial equations E. M. De Jager - Amsterdam: North-Holland, 1974. - 208p.
eng
Calculas
515.35 / DES