cat ../../bibliography.bib|grep -oP '(?<=url = {).*?(?=}$)'|sed 's/\\//g'|grep youtube|xargs youtube-dl -f worst
cat ../../bibliography.bib|grep -oP '(?<=url = {).*?(?=}$)'|sed 's/\\//g'|grep -v youtube|xargs -I{} ./save_page_as -b firefox --load-wait-time 8 --save-wait-time 10 {}