1. W. Adamski, Capacitylike set functions and upper envelopes of measures, Math. Ann., 229 (1977), 237-244.
2. W. Adamski, On regular extensions of contents and measures, J. Math. Analysis AppL, 127 (1987), 211-225.
3. B. Anger, Approximation of capacities by measures, in: Lecture Notes Math., 226, pp. 152-170, Springer, 1971.
4. B. Anger, Kapazitäten und obere Einhüillende von Maβen. Math. Ann., 199 (1972), 115-130.
5. B. Anger, Representation of capacities. Math. Ann., 229 (1977), 245-258.