Joel Friedman. Constructing O(n log n) Size Monotone Formulae for the k-th Threshold Function of n Boolean Variables. SIAM Journal on Computing, 15(3):641-654, 1986.
@article{Friedman86-0, title = {Constructing O(n log n) Size Monotone Formulae for the k-th Threshold Function of n Boolean Variables}, author = {Joel Friedman}, year = {1986}, researchr = {https://researchr.org/publication/Friedman86-0}, cites = {0}, citedby = {0}, journal = {SIAM Journal on Computing}, volume = {15}, number = {3}, pages = {641-654}, }