For a related commentary see also: Vernon RE 2013, 'Which Elements Are Metalloids?', Journal of Chemical Education, vol. 90, no. 12, pp. 1703–1707, doi:10.1021/ed3008457
Nitrogen:
Rausch MD 1960, 'Cyclopentadienyl compounds of metals and metalloids', Journal of Chemical Education, vol. 37, no. 11, pp. 568–78, doi:10.1021/ed037p568
Nitrogen:
Rausch MD 1960, 'Cyclopentadienyl compounds of metals and metalloids', Journal of Chemical Education, vol. 37, no. 11, pp. 568–78, doi:10.1021/ed037p568
Simmons LM 1947, 'A modification of the periodic table', Journal of Chemical Education, December, pp. 588–591 (589) doi:10.1021/ed024p588
Research Centre for Computational Science 2010, The periodic table of the elements, Okazaki Research Facilities, National Institutes of Natural Sciences, Aichi, Japan, viewed 14 July 2011
Castor-Perry S 2009, 'This week in science history – Mendeleev's periodic table', in Science Interviews, The Naked Scientists: Science Radio & Science Podcasts, viewed 14 July 2011
