| Contents (2009) | |||||||||||||||
Abstract | |||||||||||||||
| revisions; Yelena Shvets for pictures and editing; Ranjit Samra of rojaysoriginalart.com for the lemon figure. Thanks also to Itamar Landau and Sithparran Vanniasegaram for corrections to an earlier version and making valuable suggestions. | |||||||||||||||
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