Proof-searching algorithm in first order classical natural deduction calculus
Bolotov, A., Bocharov, V., Gorchakov, A. and Shangin, V. 2005. Proof-searching algorithm in first order classical natural deduction calculus. in: Hajek, P., Valdes-Villanueva, L. and Westerstahl, D. (ed.) Logic, methodology and philosophy of science: proceedings of the twelfth international congress King's College Publications.