Deletion of Hans Volkmer

Comment: Citation numbers below the bar for his field https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=Hans+W+Volkmer&btnG= https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=Hans+Volkmer&btnG=, and absence of any other fact supporting notability per 
Stance: delete
Cited policy: Wikipedia:Notability (WP:NPROF)

Comment: Not quite enough to push over the  bar
Stance: delete
Cited policy: Wikipedia:Notability (WP:NPROF)

Comment: It's a low citation field but we still need evidence of academic or other notability. The only other thing we have is a book with three reviews, two of which (the MathSciNet and zbMATH ones) are more or less automatic, and the notes for #C1 explicitly list those as not counting towards that criterion. The book is enough to raise my opinion from delete to weak delete, but I'd like to see something else at the same level before agreeing to keep this
Stance: delete
Cited policy: Wikipedia:Notability (WP:PROF)