1990s
1999
-
Review of Differential Form Method for Finding Classical and Nonclassical Symmetries of Differential Equations with Applicationsin Modern Group Analysis VII, eds. N. H. Ibragimov, K. Razi Naqvi, E. Straume (Mathematics and Related Sciences (MARS) Publishers, Trondheim, Norway, 1999).
‡Undergraduate Student Author
†Graduate Student Author