“General Principles, Rules, and Conventions”. Nomenclature of Organic Chemistry : IUPAC Recommendations and Preferred Names 2013 (Blue Book). Cambridge: The Royal Society of Chemistry. (2014). P-12.1. doi:10.1039/9781849733069-00001. ISBN978-0-85404-182-4. "Similarly, the retained names 'ethane', 'propane', and 'butane' were never replaced by systematic names 'dicarbane', 'tricarbane', and 'tetracarbane' as recommended for analogues of silane, 'disilane’; phosphane, 'triphosphane'; and sulfane, 'tetrasulfane'."