N’gohisse, F. K., and T. K. Boni. “Continuity of the Quenching Time in a Semilinear Heat Equation With Neumann Boundary Condition”. Rev. Anal. Numér. Théor. Approx., vol. 39, no. 1, Feb. 2010, pp. 73-86, doi:10.33993/jnaat391-921.