Correction to: Astrophys Space Sci (2019) 364:181 https://doi.org/10.1007/s10509-019-3673-2

The two articles from the Proceedings of the IAU Symposium on Planetary Nebulae referred to as Bianchi et al. (2012a) and Bianchi et al. (2012b) in the original article should have been cited as Bianchi (2012) and Bianchi et al. (2012), respectively, and the entries in the References section should have included the correct information shown below.