DeVore, Ronald A. and Popov, Vasil A. 1988. Interpolation of Besov spaces. Transactions of the American Mathematical Society, Vol. 305, Issue. 1, p. 397.
Yusen Zhan Jun Wu Chongjun Wang and Junyuan Xie 2012. On the Complexity and Algorithms of Coalition Structure Generation in Overlapping Coalition Formation Games. p. 868. Assadi, Sepehr ...