@article{article41193a2d,
title   = {Geoquimica del rubidio-estroncio y edad de las esmeraldas colombianas},
author = {Romero Ordoñez, Fernando Heli and Schultz-Güttler, Rainer Aloys and Kawashita, Koji},
year = {2000},
doi = {10.15446/gc},
journal   = {Geologia Colombiana}
}