@article{article1cd148ba,
title   = {Mass-loss rates and c / 'HE' ratios in the winds of the wc central stars of planetary nebulae},
author = {Freitas Pacheco, José Antonio and Costa, Roberto Dell'Aglio Dias da and Araujo, F X and Petrini, D},
year = {1993},
journal   = {Monthly Notices of the Royal Astronomical Society}
}