Wikipedia:Articles for deletion/Blue–green alliance
It's poorly written and lacking sourcing, but the topic itself is notable and easily sourced. My university library contains 452 published sources that discuss the topic, including 60 peer reviewed journal articles. Ask me if you need examples, but there are so many it's unlikely  was followed by the nominator
— User:4meter4, 19:09, 4 October 2019 (UTC)
Stance: keep
Cited policy: WP:BEFORE (Wikipedia:Articles for deletion)