BURKILL, J. G. (1962). Theory of ordinary differential equations. Oliver and Boyd.
Chicago-čujuhus (17. p.)BURKILL, J. G. Theory of Ordinary Differential Equations. London: Oliver and Boyd, 1962.
MLA-čujuhus (9. p.)BURKILL, J. G. Theory of Ordinary Differential Equations. Oliver and Boyd, 1962.
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