Article

Crawford, Ian and Lallement, R. and Price, R.J. and Sfeir, D.M. and Wakker, B.P. and Welsh, B.Y. (2002) High-resolution observations of interstellar Na I and Ca II towards the southern opening of the 'Local Interstellar Chimney': probing the disc—halo connection. Monthly Notices of the Royal Astronomical Society 337 (2), pp. 720-730. ISSN 0035-8711.

Crawford, Ian and Lallement, R. and Welsh, B.Y. (1998) Additional ultra-high-resolution observations of Ca+ ions in the local interstellar medium. Monthly Notices of the Royal Astronomical Society 300 (4), pp. 1181-1188. ISSN 0035-8711.