Thanks! We've updated the link from https://m.phys.org/news/2017-12-physicists-discovery-excitonium.html https://m.phys.org/news/2017-12-physicists-discovery-ex

Thanks! We've updated the link from https://m.phys.org/news/2017-12-physicists-discovery-excitonium.html https://m.phys.org/news/2017-12-physicists-discovery-exciton....