Han, P., Kao, W. F., & Pen, U. L. (1991). Conformal Gravity with Torsion. Chinese Journal of Physics, 29(4), 283-288. https://www.airitilibrary.com/Article/Detail?DocID=05779073-199108-201301240002-201301240002-283-288
Satheeshkumar, V. H., & Suresh, P. K. (2011). Gravity and Large Extra Dimensions. Advances in Astronomy, 2011(), 62-73. https://doi.org/10.1155/2011/189379