Employment, Small Business and Training (2010-12-03). "Home". www.business.qld.gov.au. Retrieved 2020-04-11.{{cite web}}: |first= has generic name (help)
GB 1039141,"A computer arranged for the automatic solution of linear programming problems by British Petroleum, Patrick Vincent Slee and Pauline Margaret Joyce Harris"
Diamond v. Diehr,49U.S.1112(SCOTUS1981)(""... insignificant postsolution activity will not transform an unpatentable principle into a patentable process."").
Beresford, K (2000). Patenting Software under the European Patent Convention. London: Sweet & Maxwell. p.4. Kretschmer, Martin (4 July 2003). "Software as Text and Machine: The Legal Capture of Digital Innovation". Journal of Information Law & Technology. Centre for Intellectual Property Policy and Management, Bournemouth University.