Potential theory for the equation of small oscillations of a rotating fluid

With the aid of potential theory the classical solvability of initial-boundary value problems is proved for the equation
$$ \frac{\partial^2}{\partial t^2}\biggl(\frac{\partial^2u}{\partial x_1^2}+\frac{\partial^2u}{\partial x_2^2}+\frac{\partial ^2u}{\partial x_3^2}\biggr)+\frac{\partial^2u}{\partial x_3^2}=0 $$
in a bounded domain of the space $\Omega$, and also in the complement of this domain. For the first boundary value problem a method of obtaining estimates of solutions in uniform norms is established, with an indication of the explicit dependence of the constants on the time exhibited.
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