@article{articleec5054df,
title   = {Astrometric and photometric study of Dias 4, Dias 6, and other five open clusters using ground-based and Gaia DR2 data},
author = {Dias, W.S and Monteiro, H and Lépine, Jacques Raymond Daniel and Prates, R and Gneiding, C. D and Sacchi, M},
year = {2018},
doi = {10.1093/mnras/sty2341},
journal   = {Monthly Notices of the Royal Astronomical Society}
}