[http://www.crcpress.com/ecommerce_product/product_detail.jsf?catno=C4487&isbn=0000000000000] (ISBN 9781584884484)* Vladimir Y. Rovenskii, "Geometry of curves and surfaces with MAPLE" [http://books.google.com/books?id=K31Nzi_xhoQC&pg=PA277&dq=conoid+maple&lr=&ei=B9hvSs_qKYzSkASR8c3XDg] (ISBN 978-0-8176-4074-3)==External links==
(ISBN:9781584884484)* Vladimir Y. Rovenskii, "Geometry of curves and surfaces with MAPLE" [http://books.google.com/books?id=K31Nzi_xhoQC&pg=PA277&dq=conoid+maple&lr=&ei=B9hvSs_qKYzSkASR8c3XDg] (ISBN 978-0-8176-4074-3)