My PhD studies are about patterns and educational learning software. I want to write about what I personally call the «theory of patterns», from «what is a pattern» to «why did I choose this type of pattern to write my pattern» going through «standardization problems», «security problems», etc.
The problem I face is a lack of literature about pattern theory. Everything I find on internet about the topic, thanks to scholar.google.com, is mostly about software design patterns, and is very specific. I have been unable to find ideas about which aspects I should talk about, to make a full inquiry into the concept of patterns, before I start proposing new patterns. I want to be original. Any ideas, any links will be very much appreciated.