Links:
[1] https://www.mpim-bonn.mpg.de/de/taxonomy/term/39
[2] https://www.mpim-bonn.mpg.de/de/node/3444
[3] https://www.mpim-bonn.mpg.de/de/node/9604
[4] https://www.google.com/url?q=https%3A%2F%2Farxiv.org%2Fpdf%2F1102.0758.pdf&sa=D&sntz=1&usg=AFQjCNGxSLOqt2vZ1GOSApG6G8rCjyYsig
[5] https://sites.google.com/view/mpimtopologystudygroup/home#h.p_mKlCyEhrvQY7