Michael Elkin, Guy Kortsarz. A Combinatorial Logarithmic Approximation Algorithm for the Directed Telephone Broadcast Problem. SIAM Journal on Computing, 35(3):672-689, 2005. [doi]
@article{ElkinK05:0,
title = {A Combinatorial Logarithmic Approximation Algorithm for the Directed Telephone Broadcast Problem},
author = {Michael Elkin and Guy Kortsarz},
year = {2005},
url = {http://epubs.siam.org/SICOMP/volume-35/art_44074.html},
researchr = {https://researchr.org/publication/ElkinK05%3A0},
cites = {0},
citedby = {0},
journal = {SIAM Journal on Computing},
volume = {35},
number = {3},
pages = {672-689},
}