1. (1) Reynolds, O., On Certain Dimensional Properties of Matter in the Gaseous State. Part I. and Part II., Proceedings of the Royal Society of London, 1878.
2. (2) Crookes, W., On attraction and repulsion resulting from radiation, Philosophical Transactions of the Royal Society of London, 1874.
3. (3) Maxwell, J.C., On stresses in rarified gases arising from inequalities of temperature, Philosophical Transactions of the Royal Society of London, 1879.
4. Die Gesetze der Molekularströmung und der inneren Reibungsströmung der Gase durch Röhren
5. (5) S. Weber and G. Schimdt, Commun. Leiden. Rapp. et Commun. 7e Congr. intern. du Froid, 1936.