Journal of the British Astronomical Association. Dec2008, Vol. 118 Issue 6, p326-335. 9p. 2 Color Photographs, 3 Black and White Photographs, 1 Diagram, 1 Chart, 5 Graphs.
Journal of the British Astronomical Association. Apr2008, Vol. 118 Issue 2, p75-86. 12p. 8 Color Photographs, 2 Black and White Photographs, 2 Diagrams, 5 Charts.