@article{4086ff0fc2d441b490697d440a4aa354,
title = "Strong np-hardness of moving many discs",
keywords = "3-partition, NP-complete problems, collision avoidance, complexity, disc-packing, geometric avoidance, motion coordinaton, motion planning, reduction, robotics",
author = "Paul Spirakis and Yap, {Chee K.}",
year = "1984",
month = jul,
day = "26",
doi = "10.1016/0020-0190(84)90130-3",
language = "English (US)",
volume = "19",
pages = "55--59",
journal = "Information Processing Letters",
issn = "0020-0190",
publisher = "Elsevier",
number = "1",
}