Commentaries on Viewpoint: A time for exercise: the exercise window.
N.G. Boulé; T. Terada; M.E. Francois; J.A. Hawley; J.D. Cotter; N.T. Kruse; M.W. McDonald; T.D. Olver; A. Paoli; M. Sacchetti; L. Di Luigi; Jan-Willem van Dijk; Luc van Loon; J. Yardley; L. DiPietro; A. Gribok; W. Rumpler