Rani, Sarita, Altaibayeva, A., Shahalam, M., Singh, J. K. and Myrzakulov, R., “Constraints on cosmological parameters in power-law cosmology”, Journal of Cosmology and Astroparticle Physics, 03 (2015), 031, arXiv: 1404.6522v1
J. K. Singh, N. K. Sharma, A. Beesham, “A Bianchi type-II dark-energy cosmology with a decaying $\Lambda$-term in the Brans–Dicke theory of gravity”, TMF, 193:3 (2017), 530–546; Theoret. and Math. Phys., 193:3 (2017), 1865–1879