GTC/OSIRIS Observations of RWT 152, a Case Study of a Planetary Nebula With an sdO Central StarA. Aller, L.F. Miranda, L. Olguín, E. Solano and A. UllaEAS Publications Series, 71-72 (2015) 305-308DOI: https://doi.org/10.1051/eas/1571071
