▁of ▁the ▁Vik ings . ▁ 2 nd ▁ed . ▁Oxford ▁Un iv . ▁Press , ▁USA , ▁ 2 0 0 1 . ▁S nor ri ▁St url us on . ▁He im sk ring la : ▁History ▁of ▁the ▁Kings ▁of ▁Norway . ▁Lee ▁Holland er , ▁transl . ▁University ▁of ▁Texas ▁Press , ▁ 1 9 9 2 . ▁Thor sson , ▁Ö rn ól fur , ▁et ▁al . ▁" E g il ' s ▁S aga ." ▁The ▁S agas ▁of ▁the ▁I cel and ers . ▁trans : ▁Bernard ▁Sc ud der ▁( P engu in ▁Class ics , ▁ 2 0 0 0 ). ▁ ▁Category : N or weg ian ▁ear ls ▁Category : 9 th - century ▁Norwegian ▁people <0x0A> </s> ▁The ▁Hal st ead - Re itan ▁Ne uro ps ych ological ▁Test ▁B atter y ▁( HR NB ) ▁and ▁al lied ▁procedures ▁is ▁a ▁compreh ensive ▁suite ▁of ▁ne uro ps ych ological ▁tests ▁used ▁to ▁assess ▁the ▁condition ▁and ▁function ing ▁of ▁the ▁brain , ▁including ▁et i ology , ▁type ▁( diff use ▁vs . ▁specific ), ▁local ization ▁and ▁later al ization ▁of ▁brain ▁injury . ▁The ▁H R NB ▁was ▁first ▁constructed ▁by ▁Ward ▁C . ▁Hal st ead , ▁who ▁was ▁chairman ▁of ▁the ▁Psych ology ▁Department ▁at ▁the ▁University ▁of ▁Chicago , ▁together ▁with ▁his ▁doctor al ▁student , ▁Ralph ▁Re itan ▁( who ▁later ▁extended ▁Hal st ead ' s ▁Test ▁B atter y