While looking for some information about the Drama Triangle by legendary Stephen Karpman (with whom, by the way, I had honor to meet and talk and even show him Moscow during his visit to Russia in 2011), found this amazing article named “The New Drama Triangles”, which contains a lot of useful and advanced information about the topic.

The link to the pdf is karpmandramatriangle.com/pdf/thenewdramatriangles.pdf

Highly recommended to read!