BibTex format
@article{DOWKER:1990:10.1016/0550-3213(90)90023-7,
author = {DOWKER, HF},
doi = {10.1016/0550-3213(90)90023-7},
journal = {NUCLEAR PHYSICS B},
pages = {194--212},
title = {ELECTROMAGNETIC WORMHOLE VERTEX},
url = {http://dx.doi.org/10.1016/0550-3213(90)90023-7},
volume = {331},
year = {1990}
}