@article{10_4153_CMB_2006_039_7,
     author = {Hiai, Fumio and Petz, D\'enes and Ueda, Yoshimichi},
     title = {A {Free} {Logarithmic} {Sobolev} {Inequality} on the {Circle}},
     journal = {Canadian mathematical bulletin},
     pages = {389--406},
     year = {2006},
     volume = {49},
     number = {3},
     doi = {10.4153/CMB-2006-039-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2006-039-7/}
}