The Reanault R5 Turbo Europacup 1981-1985

[Batschisane52]

I am recreating a "best of" edition of the Renault R5 Europacup as custom championship in GT7 right now, and while I found some information on this iconic 1980ies racing series in the web (drivers, liveries, racing calendars...) I still miss one vital point of informatin:

How were the points distrubuted in that champinship ?

I didn't find anything about it, maybe someone here in this comunity can help...