Prof. Dr. Hans Kroha.https://www.pi.uni-bonn.de/en/news/when-electrons-slowly-vanish-during-cooling/prof-dr-hans-kroha.jpeg/viewhttps://www.pi.uni-bonn.de/en/news/when-electrons-slowly-vanish-during-cooling/prof-dr-hans-kroha.jpeg/@@images/image-1200-79dad6723ae51720ce64da8f4f16c18e.jpeg
