BibTeX Reference for “R2RML and Direct Mapping Test Cases”

@TechReport{7987317,
  author      = "Boris Villaz\'{o}n-Terrazas and Michael Hausenblas",
  title       = "{R2RML} and Direct Mapping Test Cases",
  month       = aug,
  note        = "https://www.w3.org/TR/2012/NOTE-rdb2rdf-test-cases-20120814/",
  year        = "2012",
  bibsource   = "https://w2.syronex.com/jmr/w3c-biblio",
  type        = "{W3C} Note",
  institution = "W3C",
}