@article{DBLP:journals/jacm/JohnsonMMW79,
author = {Donald B. Johnson and
Webb Miller and
Brian Minnihan and
Celia Wrathall},
title = {Reducibility Among Floating-Point Graphs},
journal = {J. ACM},
volume = {26},
number = {4},
year = {1979},
pages = {739-760},
ee = {http://doi.acm.org/10.1145/322154.322164},
bibsource = {DBLP, http://dblp.uni-trier.de}
}