Observation of room-temperature high-energy resonant excitonic effects in graphene

I. Santoso, P. K. Gogoi, H. B. Su, H. Huang, Y. Lu, D. Qi, W. Chen, Muhammad Aziz Majidi, Y. P. Feng, A. T.S. Wee, K. P. Loh, T. Venkatesan, R. P. Saichu, A. Goos, A. Kotlov, M. Rübhausen, A. Rusydi