1. H. Darcy ,Recherches Experimentales Relatives au Mouvement de L’Eau dans les Tuyaux(Mallet-Bachelier, Paris, France, 1857).
2. J.T. Fanning ,A Practical Treatise on Hydraulic and Water Supply Engineering(Van Nostrand, New York, 1877; revised ed. 1886).
3. J. Nikuradse , “Laws of flow in rough pipes” [“Stromungsgesetze in Rauen Rohren,” VDI-Forschungsheft 361 (1933)];
4. Beilagezu“Forschung auf dem Gebiete des Ingenieurwesens,” Ausgabe B Band 4, English translation NACA Tech. Mem. 1292 (1937).
5. TURBULENT FLOW IN PIPES, WITH PARTICULAR REFERENCE TO THE TRANSITION REGION BETWEEN THE SMOOTH AND ROUGH PIPE LAWS.