@ARTICLE{Zyczkowski2014extra2,
title = {Constructive entanglement test from triangle inequality},
url = {http://iopscience.iop.org/1751-8121/47/42/424035},
journal = {J. Phys. A: Math. Theor.},
author = {Rudnicki, {\L}. and Pucha{\l}a, Z. and Horodecki, P. and {\.Z}yczkowski, K.},
month = {oct},
volume = {47},
year = {2014},
pages = {424035},
arxiv = {http://arxiv.org/abs/1211.2306}
}