@article{DBLP:journals/logcom/Harland94,
author = {James Harland},
title = {A Proof-Theoretic Analysis of Goal-Directed Provability},
journal = {J. Log. Comput.},
volume = {4},
number = {1},
year = {1994},
pages = {69-88},
ee = {http://dx.doi.org/10.1093/logcom/4.1.69},
bibsource = {DBLP, http://dblp.uni-trier.de}
}