@article{10_14736_kyb_2016_5_0824,
     author = {Sano, Hideki},
     title = {On approximation of stability radius for an infinite-dimensional feedback control system},
     journal = {Kybernetika},
     pages = {824--835},
     publisher = {mathdoc},
     volume = {52},
     number = {5},
     year = {2016},
     doi = {10.14736/kyb-2016-5-0824},
     mrnumber = {3602017},
     zbl = {06674941},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.14736/kyb-2016-5-0824/}
}