@article{10_4153_S0008439522000339,
     author = {Augat, Meric and McCarthy, John E.},
     title = {Operator noncommutative functions},
     journal = {Canadian mathematical bulletin},
     pages = {492--508},
     year = {2023},
     volume = {66},
     number = {2},
     doi = {10.4153/S0008439522000339},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008439522000339/}
}