TY - JOUR AU - G. A. Willis TI - Groups with Flat-Rank Greater Than 1 JO - Journal of Lie Theory PY - 2023 SP - 433 EP - 452 VL - 33 IS - 1 UR - http://geodesic.mathdoc.fr/item/JOLT_2023_33_1_a17/ ID - JOLT_2023_33_1_a17 ER -