Sturmian theory for ordinary differential equations
Reid, William T
Sturmian theory for ordinary differential equations - New York Springer-Verlag 1980 - xv,559 p.
DM54
515.352 R272S
Sturmian theory for ordinary differential equations - New York Springer-Verlag 1980 - xv,559 p.
DM54
515.352 R272S
