@article{JOLT_2022_32_1_a8,
     author = {H. Choi and Y. Lim},
     title = {Operator {Means} of {Lower} {Triangular} {Matrices}},
     journal = {Journal of Lie Theory},
     pages = {175--190},
     year = {2022},
     volume = {32},
     number = {1},
     doi = {10.5802/jolt.1225},
     zbl = {1486.22008},
     url = {https://jolt.centre-mersenne.org/articles/10.5802/jolt.1225/}
}