@article{01533627,
title = {Exponential separation in 4-manifolds.},
journal = {Geometry \& Topology},
volume = {4},
year = {2000},
pages = {397-405},
doi = {10.2140/gt.2000.4.397},
zbl = {0957.57015},
language = {en},
url = {http://dml.mathdoc.fr/item/01533627}
}
Krushkal, Vyacheslav S. Exponential separation in 4-manifolds.. Geometry & Topology, Tome 4 (2000) pp. 397-405. doi : 10.2140/gt.2000.4.397. http://gdmltest.u-ga.fr/item/01533627/