Chaobao Huang Na An Hu Chen 0001 Optimal pointwise-in-time error analysis of a mixed finite element method for a multi-term time-fractional fourth-order equation. 149-156 2023 April 135 Comput. Math. Appl. https://doi.org/10.1016/j.camwa.2023.01.028 db/journals/cma/cma135.html#HuangAC23