CNRS paper published on line in Nature Materials https://www.nature.com/articles/s41563-019-0468-3

Joint SKYTOP-TOCHA series of conferences on topological matter.  Fist workshop will be in Costa Brava, Spain 2020 – good progress: Venue, topics and invited speakers are decidedSecond workshop is  planned in Greece in 2021 (either Crete or Spetses, near Athens)