Analysis of information sources in references of the Wikipedia article "Découverte du neutron" in French language version.
« heisenberg proton neutron model. »
« neutron. »
« During the 1920s physicists came to accept the view that matter is built of only two kinds of elementary particles, electrons and protons. »
« During the 1920s physicists came to accept the view that matter is built of only two kinds of elementary particles, electrons and protons. »