springerlink
https://addons.mozilla.org/en/firefox/addon/springerlink/?src=dp-dl-othersby
sciencedirect
https://addons.mozilla.org/en/firefox/addon/sciencedirect/?src=userprofile
wiley
https://addons.mozilla.org/en/firefox/addon/wiley/
ieee-xplore
https://addons.mozilla.org/en/firefox/addon/ieee-xplore/?src=userprofile