Ordinary differential equations
Birkhoff, Garret
Ordinary differential equations - 4th ed. - New York John Wiley 1989 - 399 : xi,
9812530029
Differential equations
515.352 M9;1
Ordinary differential equations - 4th ed. - New York John Wiley 1989 - 399 : xi,
9812530029
Differential equations
515.352 M9;1