針對長距的繩索跨度(例如天線、電線及空中纜車),請參考跨度列表(英语:listofspans)。 Brett 2012,第137頁. Gere, James M.; Goodno, Barry J. Mechanics of Materials Eighth. 2013: 1086. ISBN 978-1-111-57773-5
Robert G. Moyle. The phylogenetic position of some Philippine “babblers” spans the muscicapoid and sylvioid bird radiations. Molecular Phylogenetics and
Research Institute's seeps page(页面存档备份,存于互联网档案馆) (英文)ScienceDaily News: Tubeworms in deep sea discovered to have record long life spans(页面存档备份,存于互联网档案馆)
†Proviviparus †Proviviparus talbragarensis Life spans have been reported from 3 to 11 years in various species of Viviparidae. Kear, B. P.; Hamilton-Bruce,