Geodesic
The Cauchy problem for odd-order quasilinear equations
Sbornik. Mathematics, Tome 68 (1991) no. 1, pp. 31-59

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A nonlocal Cauchy problem for multidimensional quasilinear evolution equations containing a linear differential operator $L(t,x,D_x)$ with leading derivatives of odd order is considered. The conditions on the nonlinear terms are chosen so that they are subordinate to the operator $L$. The Korteweg–de Vries equation is a special case of such equations. No smoothness conditions are imposed on the initial function $u_0(x)$ $(u_0(x)\in L_2(\mathbf R^n))$. Theorems on the existence, uniqueness, and continuous dependence on the initial data of generalized solutions are established. Bibliography: 20 titles. 
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     author = {A. V. Faminskii},
     title = {The {Cauchy} problem for odd-order quasilinear equations},
     journal = {Sbornik. Mathematics},
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     url = {http://geodesic.mathdoc.fr/item/SM_1991_68_1_a2/}
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A. V. Faminskii. The Cauchy problem for odd-order quasilinear equations. Sbornik. Mathematics, Tome 68 (1991) no. 1, pp. 31-59. http://geodesic.mathdoc.fr/item/SM_1991_68_1_a2/