@article{10_4007_annals_2012_176_3_7,
     author = {Jim Agler and John E. McCarthy and N. J. Young},
     title = {Operator monotone functions and {L\"owner} functions of several variables},
     journal = {Annals of mathematics},
     pages = {1783--1826},
     publisher = {mathdoc},
     volume = {176},
     number = {3},
     year = {2012},
     doi = {10.4007/annals.2012.176.3.7},
     mrnumber = {2979860},
     zbl = {06121651},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4007/annals.2012.176.3.7/}
}