Deletion of Best worst method

Comment: rewrite and expand. I found several recent papers (https://www.researchgate.net/publication/327478921 https://www.researchgate.net/publication/325314052 https://www.researchgate.net/publication/315960181 https://www.researchgate.net/publication/323708023) from different authors that appear to build on this research; these sources appear to satisfy 
Stance: keep
Cited policy: Wikipedia:Notability (WP:GNG)