Lawler, Gregory F. Random walk and the heat equation / Gregory F. Lawler. - Providence, R.I. : American Mathematical Society, 2010. - ix, 156 p. : ill. : 22 cm. - Student mathematical library v. 55 . ISBN: 9789349750630 (pbk.) Subjects--Topical Terms: Random walks (Mathematics)Heat equation. Dewey Class. No.: 519.282 LAW