Wikipedia:Articles for deletion/Envelope model
With the caveat of major improvements.  Does not need to be completely rewritten to meet guidelines and given an (admittedly rather cursory) review of the sources offered here, I think the concept of the "Envelope model" might just meet notability guidelines.  The article should be improved to reflect a broader idea of what an envelope model is and should be simplified to be more accessible to the average reader, otherwise we're giving |undue weight
— User:Waggie, 21:33, 14 May 2017 (UTC)
Stance: keep
Cited policy: WP:UNDUE (Wikipedia:Neutral point of view)