1.  "It is known that several substances have the property of producing certain bright lines when brought into the flame."

• On the Quantum Theory of Radiation, Albert Einstein, 1917.

• Chemical Analysis by Observation of Spectra, Gustav Kirchhoff, Robert Bunsen, 1860.

• The Theory of Heat Radiation, Max Planck, 1914.

2. "We describe monocrystalline graphitic films, which are afew atoms thick but are nonetheless stable under ambient conditions, metallic, and of remarkably high quality."

• Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils, Luigi Colombo, Rodney S. Ruoff et al., 2009.

• Graphite Thin Film Formation by Chemical Vapor Deposition, M. Yudasaka et al., 1994.

• Electric Field Effect in Atomically Thin Carbon Films, A. K. Geim et al., 2004.

3. "A great deal has been written on the influence of the absorption of the atmosphere upon the climate."

• On the Influence of Carbonic Acid in the Air upon the Temperature of the Ground, Svante Arrhenius, 1896.

• The Scientific Consensus on Climate Change, Naomi Oreskes, 2004.

• A Comparison of the Contribution of Various Gases to the Greenhouse Effect, Henning Rodhe, 1990.

4. "Are there different species of air?"

• Of the Difficulty of Producing Flame without Aire, Robert Boyle, 1672.

• Experiments and Observations on Different Kinds of Air, Joseph Priestley, 1775.

• Memoir on the Nature of the Principle which Combines with Metals during their Calcination and which Increases their Weight, Antoine Laurent Lavoisier, 1778.

5. "We report herein the existence of a metallic solid which diffracts electrons like a single crystal but has point group symmetry […] which is inconsistent with lattice translations."

• Quasicrystals: A New Class of Ordered Structures, Dov Levine, Paul Joseph Steinhardt, 1984.

• Metallic Phase with Long-Range Orientational Order and No Translational Symmetry, Dan Shechtman et al., 1984.

• Icosahedral Aluminum–Transition-Metal Alloys, Peter A.Bancel, Paul A. Heiney, 1986.