O. Basdouri, A. Braghtha, and S. . Hammami, “The second cohomology spaces $\mathcal{K}(2)$ with coefficents in the superspace of weighted densities”, Ukr. Mat. Zhurn., vol. 72, no. 10, pp. 1323–1334, Oct. 2020, doi: 10.37863/umzh.v72i10.6030.