Some cosmological aspects of Horava-Lifshitz gravity: integrable and   nonintegrable models
  In this work, some new integrable and nonintegrable cosmological models of the Ho$\check{r}$ava-Lifshitz gravity are proposed. For some of them, exact solutions are presented. Then these results extend for the F(R) Ho$\check{r}$ava-Lifshitz gravity theory case. In particular, several integrable cosmological models of this modified gravity theory were constructed in the explicit form. 
G.N. Nugmanova, Sh.R. Myrzakul, O.V. Razina, K.R. Esmakhanova, N.S.   Serikbayev, R. Myrzakulov
physics.gen-ph gr-qc