A wide and deep survey of emission-line stars in the Orion region. Wiramihardja, S. D. ; Kogure, T. ; Yoshida, S. ; Nakano, M. ; Ogura, K. ; Iwata, T. Abstract Publication: Publications of the Astronomical Society of Australia Pub Date: 1991 DOI: 10.1017/S1323358000025182 Bibcode: 1991PASA....9..126W