1. Théorie générale des densités;Fuchs;Rend. Accad. Naz. Sci. XL Mem. Mat. Appl.,1990
2. On weighted densities;Giuliano-Antonini;Czech. Math. J.,2007
3. Divergent Series;Hardy,1949
4. On asymptotic and logarithmic densities;Luca;Tatra Mt. Math. Publ.,2005
5. R. Mesiar, Ľ. Valášková, Universal fuzzy measures, in: Proc. IFSA 2003, Istanbul, 2003, pp. 139–142.