BibTex format
@article{van:2003:10.1016/s1571-0661(04)80776-x,
author = {van, Bakel S},
doi = {10.1016/s1571-0661(04)80776-x},
journal = {Electronic Notes in Theoretical Computer Science},
pages = {1--20},
title = {Rank 2 Types for Term Graph Rewriting},
url = {http://dx.doi.org/10.1016/s1571-0661(04)80776-x},
volume = {75},
year = {2003}
}