clean:
	find . -type f \( -name "*.aux" -o -name "*.bbl" -o -name "*.bcf" -o -name "*.blg" -o -name "*.fdb_latexmk" -o -name "*.fls" -o -name "*.log" -o -name "*.out" -o -name "*.pdf" -o -name "*.run.xml" -o -name "*.synctex.gz" -o -name "*.toc" -o -name "*.gz" \) ! -name "cc_by_30.pdf" ! -name "cc_cc_30.pdf" ! -name "cc_sa_30.pdf" -exec rm {} +