DAS, Tarun - SHAH, Ekta - SNOHA, Ľubomír. (Non-)expansivity in functional envelopes. In Journal of Mathematical Analysis and Applications. - San Diego : Academic Press, 2014. ISSN 0022-247X, 2014, vol. 410, no. 2, pp. 1043-1047. Dostupné na: https://doi.org/10.1016/j.jmaa.2013.08.057.