Authors: J Asmussen; S Elkjaer; G Cold; P Herlevsen; N C Melsen; M Engberg; B Hove; J Astrup Journal: Acta Neurochir (Wien) Date: 1989 Impact factor: 2.216
Authors: M Ito; A A Lammertsma; R J Wise; S Bernardi; R S Frackowiak; J D Heather; C G McKenzie; D G Thomas; T Jones Journal: Neuroradiology Date: 1982 Impact factor: 2.804