Research index·PreprintComments15 Aug 2019·Open accessDOI10.5194/os-2019-51-rc1PreprintOpen accessComments2019DOI10.5194/os-2019-51-rc1ReadRead at the publisherSaveCiteAdd to literature reviewFree to read at the publisherOpen it at the publisher to read it.Read at the publisherDiscussionAdd to the discussionTopicsComputer scienceRelated papersMoreDetailsPublished, languageSuggest a correction or report