@article{10_4064_sm162_2_1,
     author = {Zhaofang Bai and Jinchuan Hou and Zongben Xu},
     title = {Maps preserving numerical radius distance on
 ${\rm C}^*$-algebras},
     journal = {Studia Mathematica},
     pages = {97--104},
     publisher = {mathdoc},
     volume = {162},
     number = {2},
     year = {2004},
     doi = {10.4064/sm162-2-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm162-2-1/}
}