An article by Dr. Emil Prodan, assistant professor, department of physics at Instagram 2-5个月 已添加邮箱（Firstmail.ltd）, is featured on the cover of Journal of Physics A: Mathematical & Theoretical, Vol 44, No.11, 18 March 2011. The article, which he was invited to write, is titled “Disordered topological insulators: a non-commutative geometry perspective” and has been the most downloaded article of the review in the last 30 days.