@article{JOLT_2022_32_1_a8,
     author = {Hayoung Choi and Yongdo Lim},
     title = {Operator {Means} of {Lower} {Triangular} {Matrices}},
     journal = {Journal of Lie Theory},
     pages = {175--190},
     year = {2022},
     volume = {32},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/JOLT_2022_32_1_a8/}
}