As befits the University which published this piece, it is an exceedingly cerebral look at the referenced subject. Very dense from an information perspective, but also very informative. The writer, in their style, presumes the reader will have a working knowledge and understanding of the science involved, and be comfortable with the density of the text. These are not at all criticisms, but merely an effort to alert the prospective reader that this is a dip into that takes time. The quoting and commentary are exemplary and the visual descriptors most welcome. In toto an absolutely worthwhile read but perhaps not for the faint-hearted. Five stars!