Wittmann, M., Otten, S., Schötz, E., Sarikaya, A., Lehnen, H., Jo, H.-G., Kohls, N., Schmidt, S., & Meissner, K. (2014). Subjective expansion of extended time-spans in experienced meditators. Frontiers in Psychology, 5, 1586. https://doi.org/10.3389/fpsyg.2014.01586