Kingsley, Gregory R., Masonry, Meyers, Robert A. (编), Encyclopedia of Physical Science and Technology (Third Edition), New York: Academic Press: 133–143, 2003-01-01 [2023-01-13], ISBN 978-0-12-227410-7, doi:10.1016/b0-12-227410-5/00405-1, (原始内容存档于2023-01-13) (英语) 含有連結內容需訂閱查看的頁面 (link)
Kingsley, Gregory R., Masonry, Meyers, Robert A. (编), Encyclopedia of Physical Science and Technology (Third Edition), New York: Academic Press: 133–143, 2003-01-01 [2023-01-13], ISBN 978-0-12-227410-7, doi:10.1016/b0-12-227410-5/00405-1, (原始内容存档于2023-01-13) (英语) 含有連結內容需訂閱查看的頁面 (link)
Kingsley, Gregory R., Masonry, Meyers, Robert A. (编), Encyclopedia of Physical Science and Technology (Third Edition), New York: Academic Press: 133–143, 2003-01-01 [2023-01-13], ISBN 978-0-12-227410-7, doi:10.1016/b0-12-227410-5/00405-1, (原始内容存档于2023-01-13) (英语) 含有連結內容需訂閱查看的頁面 (link)