@Article{Zhang1997,
author = {D. F. Zhang and H. A. Stone},
title = {Drop formation in viscous flows at a vertical capillary tube},
journal = {Phys. Fluids},
year = {1997},
volume = {9},
number = {8},
pages = {2234},
doi = {10.1063/1.869346},
publisher = {{AIP} Publishing}
}