2023

• Østerlie, Ove; Kristensen, Geir Olav. (2023) Norwegian Physical Education Teacher Education Students’ Perceptions of the Subject Physical Education: A Qualitative Study of Students’ Reflections before Starting Their Studies. Education Sciences
  Academic article

2017

• Elnan, Ingrid; Kristensen, Geir Olav; Østerlie, Ove. (2017) Nyankomne elever og kroppsøvingsfaget. Gyldendal Akademisk
  Academic chapter/article/Conference paper

2015

• Østerlie, Ove; Kristensen, Geir Olav; Vedul-Kjelsås, Vigdis. (2015) Basis II. I artikkelkompendium K2 GLU 1-7 og 5-10. Akademika forlag Akademika forlag
  Compendium

2014

• Bjerke, Øyvind; Kristensen, Geir Olav. (2014) Aktiviteter på snø og is. Akademika forlag Akademika forlag
  Compendium

2006

• Kristensen, Geir Olav; Tillaar, Roland van den; Ettema, Gerardus Johannes C. (2006) Velocity Specificity in Early-Phase Sprint Training. Journal of Strength and Conditioning Research
  Academic article