На 24 май 2011 в научното списание International Journal of Control излезе от печат статията на Vasile Dragan и проф. Иван Иванов

A numerical procedure to compute the stabilising solution of game theoretic Riccati equations of stochastic control,

в списанието Numerical Algorithms - статията на Vasile Dragan и проф. Иван Иванов

Computation of the stabilizing solution of game theoretic Riccati equation arising in stochastic H ∞  control problems,

а в списанието Journal of Numerical Mathematics and Stochastics - статията на проф. Иван Иванов

An Improved Method for Solving a System of Discrete-Time Generalized Riccati Equations