@article{articled99fdbf4,
title   = {Pedagogical content knowledge of “structure of matter” of an experienced chemistry teacher within general chemistry course},
author = {Leal, Sérgio Henrique and Novais, Robson Macedo and Fernandez, Carmen},
year = {2015},
doi = {10.1590/1516-731320150030013},
journal   = {Ciências & Educação}
}