问使用sed擦除bibtex条目中的字段

EN

@article{Lindgren1989Resonant,
    abstract = {Using a simple model potential, a truncated image barrier, for the
Al(111) surface, one obtains a resonant bound surface state at an energy
that agrees surprisingly well with recent observations by inverse
photoemission.},
    author = {Lindgren and Walld\'{e}n, L.},
    citeulike-article-id = {9286612},
    citeulike-linkout-0 = {http://dx.doi.org/10.1103/PhysRevB.40.11546},
    citeulike-linkout-1 = {http://adsabs.harvard.edu/cgi-bin/nph-bib\_query?bibcode=1989PhRvB..4011546L},
    doi = {10.1103/PhysRevB.40.11546},
    journal = {Phys. Rev. B},
    keywords = {image-potential, surface-states},
    month = dec,
    pages = {11546--11548},
    posted-at = {2011-05-12 11:42:49},
    priority = {0},
    title = {Resonant bound states for simple metal surfaces},
    url = {http://dx.doi.org/10.1103/PhysRevB.40.11546},
    volume = {40},
    year = {1989}
}

sed "/^\s*${field}.*=/,/},?$/{
    d
}" file

@article{Lindgren1989Resonant,