I'm not sure. I found it by Googling. I think, given there are several authors listed that, yes, it has been proof-read. Generally I wouldn't consider the occa

I'm not sure. I found it by Googling. I think, given there are several authors listed that, yes, it has been proof-read. Generally I wouldn't consider the occasional typo to be indicative of the quality of the underlying research. Zooming in on a minor detail in an attempt to paint the paper negatively seems needlessly pedantic, but that's just my opinion.