1. Solution of the matrix equation (d/dt)σ(t) = A(t)σ(t) + σ(t)B(t) + U(t);Athans,1965
2. Optimal Control: An Introduction to the Theory and Its Applications;Athans,1966
3. Gradient matrices and matrix calculations;Athans,1965
4. Introduction to Matrix Analysis;Bellman,1960
5. Mathematical Methods of Statistics;Cramer,1946