A Generalized Interval Arithmetic. - E. R. Hansen (Interval Mathematics, 1975)

The asymptotic optimality of discretized linear reward-inaction learning automata. - B. John Oommen; E. R. Hansen (IEEE Trans. Syst. Man Cybern., 1984)

Expedient Stochastic Move-to-Front and optimal Move-to-Rear List Organizing Strategies. - B. John Oommen; E. R. Hansen (ICDT, 1986)

List Organizing Strategies Using Stochastic Move-to-Front and Stochastic Move-to-Rear Operations. - B. John Oommen; E. R. Hansen (SIAM J. Comput., 1987)

Deterministic Optimal and Expedient Move-to-Rear List Organizing Strategies. - B. John Oommen; E. R. Hansen; J. Ian Munro (Theor. Comput. Sci., 1990)

Adaptive learning mechanisms for ordering actions using random races. - David T. H. Ng; B. John Oommen; E. R. Hansen (IEEE Trans. Syst. Man Cybern., 1993)

Preconditioning Linearized Equations. - E. R. Hansen (Computing, 1997)