Study realised by Wolfram J. Horneff (Goethe University), Raimond H. Maurer (Goethe University), Olivia S. Mitchell (The Wharton School
University of Pennsylvania), and Michael Z. Stamos (Goethe University)
Study realised by Wolfram J. Horneff (Goethe University), Raimond H. Maurer (Goethe University), Olivia S. Mitchell (The Wharton School
University of Pennsylvania), and Michael Z. Stamos (Goethe University)