A morpho-kinematic and spectroscopic study of the bipolar nebulae: M 2−9, Mz 3, and Hen 2−104N. Clyne, S. Akras, W. Steffen, M. P. Redman, D. R. Gonçalves and E. HarveyA&A, 582 (2015) A60DOI: https://doi.org/10.1051/0004-6361/201526585