TY - JOUR AU - Xifu Liu TI - Positive semidefinite solution to matrix completion problem and matrix approximation problem JO - Filomat PY - 2022 SP - 3709 VL - 36 IS - 11 UR - http://geodesic.mathdoc.fr/articles/10.2298/FIL2211709L/ DO - 10.2298/FIL2211709L LA - en ID - 10_2298_FIL2211709L ER -