Holmberg, J. L. Julkaisussa Linköping Studies in Science and Technology, Thesis No. 1346 (2008) “...Holmberg, J. L....”
Holmberg, J. L. Julkaistu 2008 “...Holmberg, J. L....”
Holmberg, J. L., Holmberg, H. C. Julkaisussa 4th International Congress on Science and Skiing (2007) “...Holmberg, J. L....”