I have written four books in Norwegian:
Aksjekjøp og daytrading – metode, psykologi, risiko og strategier (foreword by Stig R. Myseth). 25 000 copies sold (Norway only). Published in 2002, additional chapters in 2006 and 2022.
Trading på 1-2-3 (out of stock at the moment):
Investeringsstrategier – my most recent book (published in 2020)