Brannan, James R. (2015). Differntial equations : an introduction to modern methods and applicatons 3rd ed.. John Wiley and sons.
Brannan, James R. Differntial equations : an introduction to modern methods and applicatons 3rd ed.. John Wiley and sons, 2015.
Brannan, James R., "Differntial equations : an introduction to modern methods and applicatons 3rd ed.," John Wiley and sons, 2015.