Sobotka, M., Muller, R., Bonet, J. A., Márquez, I. Evolution of small-scale features at the penumbra-photospere border. In: SAWAYA-LACOSTE, H., ed. SOLMAG 2002. Proceedings of the magnetic coupling of the solar atmosphere euroconference and IAU colloquium 188. Noordwijk: ESA Publication Division, 2002, s. 579-582.