“Electronic and Vibrational Spectral Studies of 4- Dimethylamino Benzaldehyde, Solvent Effect and Effect of pH on n- π* and π-π* Transitions”, J. Int. Acad. Phys. Sci., vol. 11, no. 1-4, pp. 13–21, Dec. 2007, Accessed: Oct. 23, 2026. [Online]. Available: http://www.iaps.org.in/journal/index.php/journaliaps/article/view/822