TY - JOUR AU - G. Czichowski TI - A Lie Theory of Differential Equations and Computer Algebra JO - Journal of Lie Theory PY - 1991 SP - 83 EP - 92 VL - 1 IS - 1 UR - https://jolt.centre-mersenne.org/articles/10.5802/jolt.9/ DO - 10.5802/jolt.9 ID - JOLT_1991_1_1_a8 ER -