Bianchi, Carlo; Calzolari, Giorgio and Corsi, Paolo (1981): Alternative estimates of the Klein-I model. Published in: IBM Italy Technical Report No. G513-3584 (September 1981): pp. 1-45.
Salant, Stephen W. and Wenocur, Roberta S. (1981): Recurrence of a modified random walk and its application to an economic model. Published in: Siam Journal of Applied Mathematics , Vol. Vol. 40, No. No. 1 : pp. 163-166.
Panaretos, John (1981): On the Joint Distribution of Two Discrete Random Variables. Published in: Annals of the Institute of Statistical Mathematics, A (Theory and Methods) , Vol. Vol.32, No. 2 (1981): pp. 191-198.
Panaretos, John (1981): On the Relationship between the Conditional and Unconditional Distribution of a Random Variable. Published in: Statistical Distributions in Scientific Work , Vol. Vol. 4, (1981): pp. 379-387.
Panaretos, John (1981): A Characterization of the Negative Multinomial Distribution. Published in: Statistical Distributions in Scientific Work , Vol. Vol. 4, (1981): pp. 331-339.
Hallwood, Paul and Sinclair, Stuart (1981): OPEC and the non-oil developing countries in the 1970s. Unpublished.
Bianchi, Carlo; Calzolari, Giorgio and Corsi, Paolo (1981): Standard errors of multipliers and forecasts from structural coefficients with block-diagonal covariance matrix. Published in: Dynamic Modelling and Control of National Economies (IFAC) No. Ed. by J. M. L. Janssen, L. F. Pau, and A. J. Straszak. Oxford: Pergamon Press (1981): pp. 311-316.
Termini, Valeria A. (1981): Logical, mechanical and historical time in economics. Published in: Economic Notes, Monte dei Paschi di Siena , Vol. vol 10, No. n. 3 (March 1981): pp. 2-48.
Over, A. Mead (1981): On the care and feeding of a gift horse: The recurrent cost problem and optimal reduction of recurrent inputs. Unpublished.
