TY - JOUR AU - Kwok, S AU - Volk, K AU - Hrivnak, B C2 - ASP Conference Series DA - 1991-01-01 LA - en M1 - 14 PB - ASP Conference Series PY - 1991 TI - Candidates for bipolar proto-planetary nebulae, in Astrophysics with Infrared Arrays, ed. by R. Elston ER -