Orbits of non-elliptic disc automorphisms on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msup><mml:mi>H</mml:mi><mml:mi>p</mml:mi></mml:msup></mml:math>
Journal of mathematical analysis and applications