doi:10.1007/978-3-319-67202-1_7engGracia Lozano, José LuisO'Riordan, E.Singularly perturbed initial-boundary value problem with a pulse in the initial conditionART-2017-103770A singularly perturbed parabolic equation of reaction-diffusion type is examined. Initially the solution approximates a concentrated source, which causes an interior layer to form within the solution for all future times. Combining a classical finite difference operator with a layer-adapted mesh, parameter-uniform convergence is established. Numerical results are presented to illustrate the theoretical error bounds.2017http://zaguan.unizar.es/record/7568510.1007/978-3-319-67202-1_7http://zaguan.unizar.es/record/75685oai:zaguan.unizar.es:75685info:eu-repo/grantAgreement/ES/MICINN/MTM2016-75139-RLecture notes in computational science and engineering 120 (2017), 87-99All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess