A. A. Kovalevsky & F. Nicolosi. (2019). On Conditions of the Nonexistence of Solutions of Nonlinear Equations with Data from Classes Close to <em>L</em><sup>1</sup>.
            <i>Journal of Partial Differential Equations</i>. <i>26</i> (1).
            39-47.
         doi:10.4208/jpde.v26.n1.4