Ruey-Der Lou, Majid Sarrafzadeh, D. T. Lee. An Optimal Algorithm for the Maximum Two-Chain Problem. SIAM J. Discrete Math., 5(2):285-304, 1992.
@article{LouSL92,
title = {An Optimal Algorithm for the Maximum Two-Chain Problem},
author = {Ruey-Der Lou and Majid Sarrafzadeh and D. T. Lee},
year = {1992},
journal = {SIAM J. Discrete Math.},
volume = {5},
number = {2},
pages = {285-304},
}