The Quantum Hall Effect - Daijiro Yoshioka - Google Books

https://books.google.de/books?id=FPf0CAAAQBAJ&pg=PA20#v=onepage

Today, more than 20 years after the discovery of the quantum Hall effect, the number of publications in this field, at more than one paper per day, is still increasing. This remarkable fact requires some explanation. It also poses, but perhaps also…