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"A note on the classifications of hyperbolic and elliptic equations with ..."
Adem Kiliçman, Hassan Eltayeb (2008)
- Adem Kiliçman, Hassan Eltayeb:
A note on the classifications of hyperbolic and elliptic equations with polynomial coefficients. Appl. Math. Lett. 21(11): 1124-1128 (2008)
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