It's not as hard as you think, but it does take consistent, persistent work on your part. (bookmarketingtools.com)
I believe that with persistent work and diligence Africa can truly claim this century as ours. (ghanapoliticsonline.com)
Special thanks go to Ivan Terentev, one of our very active citizen scientists, whose persistent work on finding and collecting HyMoRS in a discussion thread on RadioTalk (link) without doubt earned the second place in the author list of this paper. (blog.galaxyzoo.org)