钪酸镨SpringerMaterials (页面存档备份,存于互联网档案馆), abgerufen am 17. August 2021 David A. Maclean, Kan Seto, J.E. Greedan. Electrical resistivities of single-crystal
1923年鐵路in New England. Railfare. 1985. ISBN 978-0-919130-43-2. Wright, John; Maclean, Ian. Circles Under the Clyde: a history of the Glasgow Underground. Harrow