| 1991 | An Algorithm for Determining the Regulator and the Fundamental Unit of Hyperelliptic congruence Function Field. | Andreas Stein, Horst Gnter Zimmer |
| 1991 | A Theory for Parametric Linear Systems. | William Y. Sit |
| 1991 | A Fast Deterministic Algorithm for Factoring Polynomials over Finite Fields of Small Characteristic. | Victor Shoup |
| 1991 | Existence Theorems for Polynomial First Integrals. | Fritz Schwarz |
| 1991 | An Algorithm for Computing Genera of Ternary and Quaternary Quadratic Forms. | Rainer Schulze-Pillot |
| 1991 | Fast Reduction and Composition of Binary Quadratic Forms. | Arnold Schnhage |
| 1991 | An Embedding Algorithm for Algebraic Congruence Function Fields. | Joacheim Schmitt |
| 1991 | Determination of the Root System of Semisimple Lie Algebras from the Dynkin Diagram. | H. Schlegel |
| 1991 | An Algorithms for Computing Integral Bases of an Algebraic Function Field. | Marc Rybowicz |
| 1991 | Application of Computer Algebra to the Investigation of the Orbital Satellite Motion. | V. M. Rudenko, V. V. Leonov, A. F. Bragazin, I. P. Shmyglevsky |
| 1991 | Qualitative Reasoning, Dimensional Analysis and Computer Algebra. | Waldir L. Roque, Renato P. dos Santos |
| 1991 | Implementation of Multilinear Operators in REDUCE and Applications in Mathematics. | Marcel Roelofs, Peter K. H. Gragert |
| 1991 | PAC: First Experiments on a 128 Transputers Mganode. | Franoise Roch-Siebert, Gilles Villard |
| 1991 | Towards Computing Non Algebraic Cylindrical Decompositions. | Daniel Richardson |
| 1991 | Nonlinear Evolution Equations and the Painlev Analysis: A Constructive Approach with REDUCE. | Friedrich Renner |
| 1991 | Reduction of Systems of Differential Equations to Standard form and Their Integration Using Directed Graphs. | Gregory J. Reid, A. Boulton |
| 1991 | Application of Grbner Bases to the Resolution of Systems of Norm Equations. | Attila Peth |
| 1991 | Formal Methods in Delay-Differential Equations. | Giampiero Pecelli |
| 1991 | The Yang-Baxter Equation and a Systematic Search for Poisson Brackets on Associative Algebras. | Walter Oevel, Klaus Strack |
| 1991 | An Improved Approach to Automatic Error Cumulation Control. | J. H. J. Molenkamp, V. V. Goldman, J. A. van Hulzen |
| 1991 | Operating Computer Algebra Systems by Handprinted Input. | Reiner Marzinkewitsch |
| 1991 | Grbner Bases of Ideals Given by Dual Bases. | Maria Grazia Marinari, H. Michael Mller, Teo Mora |
| 1991 | Efficient Techniques for Multipolynomial Resultant Algorithms. | Dinesh Manocha, John F. Canny |
| 1991 | Algorithms for Difference Schemes construction on Non-Orthogonal Logically Rectangular Meshes. | Richard Liska, Mikhail Yu. Shashkov |
| 1991 | Algebraic Programs Optimization. | Alexander A. Letichevsky, Julia V. Kapitonova, S. V. Konozenko |