Welcome to the forum Pulka
.
I suppose you prefer sources written in English ...Try and get:
A History of SPANISH FIREARMS by James D. Lavin.
ESPINGARDA FEITICEIRA/BEWITCHED GUN By Rainer Daehnhardt (bilingual).
Let us also see what other members suggest.
You can also study the subject on this very forum, by looking on the
Members List for (deceased) member
Matchlock and check on his threads.