Ayres, F. (1972). Theory and problems of differential equations. McGraw - Hill.
Chicago Edition CitationAyres, Frank. Theory and Problems of Differential Equations. New York: McGraw - Hill, 1972.
Cita MLAAyres, Frank. Theory and Problems of Differential Equations. McGraw - Hill, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.