TY - BOOK AU - Cantwell Brian J TI - Introduction to symmetry analysis SN - 978-0-521-77740-2 U1 - 515.35 PY - 2002/// CY - Cambridge PB - CUP KW - Differential equations-numerical solutions KW - Symmetry(Physics) N1 - Accompanies a CD-ROM bearing acc no D814 ER -