Lawler, Gregory F., 1955- Random walk and the heat equations / Gregory F. Lawler. - Providence, Rhode Island American Mathematical Society, 2010. - ix, 156 p. : il. ; 22 cm. - Student mathematical library ; v. 55 . ISBN: 9780821848296 Descriptores--Materias: Probability.Stochastic processes.Heat equations.Fractals.