The Free On-line Dictionary of Computing (30 December 2018):

linear logicA logic invented by Girard in 1987 that can be used in proofs related to resource usage. (http://brics.dk/LS/96/6/BRICS-LS-96-6/BRICS-LS-96-6.html). [Wadler, P., "Is there a use for linear logic", ACM/IFIP PEPM Conference, 1991]. [Summary?] (2003-05-02)