1980s
1987
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J. Math. Phys. 28 (6), 1261-1264 (1987).
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Symmetry Groups of Partial Differential Equations Associated with Vector-Valued Differential FormsProceedings of the XV International Colloquium on Group Theoretical Methods in Physics, R. Gilmore, ed. (World Scientific, Singapore, 1987) pp. 440-445.
‡Undergraduate Student Author
†Graduate Student Author