Bell, T.A. and Viti, S. and Williams, D.A. and Crawford, Ian and Price, R.J. (2005) The chemistry of transient microstructures in the diffuse interstellar medium. Monthly Notices of the Royal Astronomical Society 357 (3), pp. 961-966. ISSN 0035-8711.

Crawford, Ian and Williams, D.A. (1997) Detection of interstellar NH towards ζ Ophiuchi by means of ultra-high-resolution spectroscopy. Monthly Notices of the Royal Astronomical Society 291 (3), L53-L56. ISSN 0035-8711.