Literature:

DIFFERENTIAL EQUATIONS:

The book is available on the net free of charge at the link:

Edwards and Penney Elementary Differential Equations

(The book  is also available as an eText Book at Amazon:

Elementary-Differential-Equations with Boundary Value Problems)

It can also be ordered from many net-stores, such as  Amazon.com (provided that it is in stock).

(The bookstore at the university, Akademika, appears unable to order it.)

?(Of course, used books would be an option.)

CONTROL THEORY:

For students preferring  Norwegian:

 Knut Syds?ter, Atle Seierstad og Arne Str?m,  Matematisk Analyse?, Bind 2, 4. utgave 2002 (eller nyere).

ISBN 82-05-30139-5.

For students preferring English:

Knut Syds?ter, Peter Hammond, Atle Seierstad and Arne Str?m,

 Further mathematics for economic analysis. 2nd edition 2009  (or newer). Prentice-Hall.

ISBN 978-0-273-71328-9

In addition, the lecture notes can be used:

Lecture Notes in Control Theory

 The notes cover the Control Theory (and Calculus of Variations)  part and contains many additional exercises.