An International Symposium (Wilhelm and Else Heraeus Seminar # 702) Marked the Centennial of Otto Stern's First Molecular Beam Experiment and the Thriving of Atomic Physics; A European Physical Society Historic Site Was Inaugurated - Friedrich, Bretislav; Herschbach, Dudley; Schmidt-Böcking, Horst; Toennies, Peter (Frontiers in Physics, 2019)