2023

• Reiten, Ingrid; Olsen, Grethe Mari; Bjaalie, Jan G.; Witter, Menno Peter; Leergaard, Trygve B.. (2023) The efferent connections of theorbitofrontal, posterior parietal,and insular cortex of the rat brain. Scientific Data
  Vitenskapelig artikkel

2019

• Olsen, Grethe Mari; Hovde, Karoline; Kondo, Hideki; Sakshaug, Teri; Haaland Sømme, Hanna; Whitlock, Jonathan. (2019) Organization of Posterior Parietal–Frontal Connections in the Rat. Frontiers in Systems Neuroscience
  Vitenskapelig artikkel

2017

• Olsen, Grethe Mari; Ohara, Shinya; Iijima, Toshio; Witter, Menno. (2017) Parahippocampal and retrosplenial connections of rat posterior parietal cortex. Hippocampus
  Vitenskapelig artikkel

2016

• Olsen, Grethe Mari; Witter, Menno. (2016) Posterior parietal cortex of the rat: Architectural delineation and thalamic differentiation. Journal of Comparative Neurology
  Vitenskapelig artikkel

2015

• Olsen, Grethe Mari; Sonnewald, Ursula. (2015) Glutamate: Where does it come from and where does it go?. Neurochemistry International
  Vitenskapelig artikkel

2010

• Witter, Menno; Bonnevie, Tora; Alme, Charlotte; Olsen, Grethe Mari. (2010) Publikumsstand / aktivitet. Åpning St Olavs Hospital
  Annen presentasjon
• Olsen, Grethe Mari; Witter, Menno. (2010) Thalamically defined parts of the parietal cortex show different projections to the parahippocampal region in the rat. Society for Neuroscience : Abstracts
  Sammendrag/abstract