Deletion of Bowers style acronym

Comment: unless, prior to expiration of AfD, someone presents a reference to a published source meeting the |reliable source guidelines, that confirms that these abbreviations have a reasonably wide degree of recognition in the field of mathematics. A Google Books search on http://books.google.com/books?q=sirco+girco+snic&btnG=Search+Books&as_brr=0 sirco girco snic gives no hits; ditto http://scholar.google.com/scholar?q=sirco+girco+snic&ie=UTF-8&oe=UTF-8&hl=en&btnG=Search Google Scholar
Stance: delete
Cited policy: Wikipedia:Reliable sources (WP:RS)