00444nas a2200181   4500000000100000000000100001000000100002008004100003100001700044700002200061700002200083700001800105700002200123245008600145300001100231490000700242022001300249       2010                            d1 aPiotr Gawron1 aZbigniew Puchała1 aJaroslaw Miszczak1 aŁ. Skowronek1 aKarol Życzkowski00aRestricted numerical range: A versatile tool in the theory of quantum information  a1022040 v51  a00222488