TY - JOUR AU - Myers, Donald E. TI - Another proof of the differentiability of a matrix JO - Portugaliae mathematica PY - 1972 SP - 119 EP - 120 VL - 31 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PORMA_1972__31_2_115168/ LA - en ID - PORMA_1972__31_2_115168 ER -