SINGH, A.; JOSHI, D.; YADAV, R.; SINHA, P.; SHARDA, V.; YADAV, A.; CHAUDHARY, S.; KAWALE, S.; GUPTA, G.; MISHRA, V. N.; CHAURASIA, R. N.; PATHAK, A. Central cognitive processing assessed by P300 in migraine, tension‑type headache, and cluster headache. International Journal of Clinical and Experimental Physiology, v. 2, n. 4, p. 220-223, 31 out. 2015.