Research index·Book chapterNotesZed Books Ltd·1 Jan 2017DOI10.5040/9781350225435.0007Book chapterNotesZed Books Ltd · 2017 · SubscriptionDOI10.5040/9781350225435.0007ReadRead at the publisherSaveCiteAdd to literature reviewPaywalledThe full text is at the publisherOpen it at the publisher to read it.Read at the publisherDiscussionAdd to the discussionTopicsComputer scienceRelated papersMoreDetailsPublished, languageSuggest a correction or report