V.  Kumar, Dongre, S. D., Vandhanam, A., Jadhav, A. Badrinaray, Kumar, J., and Babu, S. Santhosh, ?(Chiro)optical Properties of ?-Extended Spiro-Double Carbo[7]helicene?, Journal of Physical Chemistry Letters, vol. 16, no. 45, pp. 11657-11664, 2025.