Selection out of more than 100 studies composed by
Jarl Aage Henning Ulrichsen (Norway, 15.7.1947).
He is Professor in Trondheim and is also Fide Master.
See for more information Norway Wikipedia.
(All his studies, more exact dates, possible corrections or cooks and exact details about sources can be found in the
Harold van der Heijden database V (31-12-2015) ).