Doerr, Benjamin Algorithms and Complexity, MPI for Informatics, Max Planck Society;
Wahlström, Magnus Algorithms and Complexity, MPI for Informatics, Max Planck Society;
Link (Any fulltext)
Doerr, B., & Wahlström, M. (2014). Randomized Rounding in the Presence of a Cardinality Constraint. ACM Journal of Experimental Algorithmics, 19(1): 1.2, pp. 1-18. doi:10.1145/2594409.