TY - GEN AU - Olver, Peter J. TI - Applications of Lie groups to differential equations T2 - Graduate texts in mathematics SN - 0387950001 AV - QA372 .O55 1993 PY - 1993/// CY - New York PB - Springer-Verlag KW - Lie groups KW - Differential equations N1 - Includes bibliographical references (p. 467-488) and indexes ER -