BIRKHOFF, Garrett
Ordinary differential equations - 3rd ed. - New York John Wiley 1978 - xi, 342 p.
78120
Ordinary differential equations
515.352 / BIR
Ordinary differential equations - 3rd ed. - New York John Wiley 1978 - xi, 342 p.
78120
Ordinary differential equations
515.352 / BIR