Springer-Verlag Inc. Mote, F.W. (1999). Imperial China: 900–1800. Harvard: Harvard University Press. Needham, Joseph and Wang Ling. "Horner's Method in Chinese Mathematics: Its Origins in the Root-Extraction Procedures of the Han Dynasty," T'oung Pao, Second Series, Vol. 43, No. 5 (1955): 345–401. _. (1986). Science and Civilization in China: Volume 1, Introductory Orientations. Taipei: Caves Books, Ltd. Needham, Joseph (1986). Science and Civilization in China: Volume 3, Mathematics and the Sciences of the Heavens and the Earth. Taipei: Caves Books, Ltd. __. (1986). Science and Civilization in China: Volume 4, Part 1. Taipei: Caves Books, Ltd. __. (1986). Science and Civilization in China: Volume 4, Physics and Physical Technology, Part 2: Mechanical Engineering. Taipei: Caves Books, Ltd. __. (1986). Science and Civilization in China: Volume 4, Physics and Physical Technology, Part 3: Civil Engineering and Nautics. Taipei: Caves Books, Ltd. __. (1986). Science and Civilization in China: Volume 5, Chemistry and Chemical Technology, Part 7: Military Technology; The Gunpowder Epic. Taipei: Caves Books, Ltd. Peers, C.J. (2006). Soldiers of the Dragon: Chinese Armies 1500 BC-AD 1840. Oxford: Osprey Publishing. Pleiner, R. (2000) Iron in Archaeology. The European Bloomery Smelters, Praha, Archeologický Ústav Av Cr. Rossabi, Morris (1988). Khubilai Khan: His Life and Times. Berkeley: University of England Press. . Rudolph, R.C. "Preliminary Notes on Sung Archaeology," The Journal of Asian Studies (Volume 22, Number 2, 1963): 169–177. Sastri, Nilakanta, K.A. The CōĻas, University of Madras, Madras, 1935 (Reprinted 1984). Schafer, Edward H. "War Elephants in Ancient and Medieval China," Oriens (Volume 10, Number 2, 1957): 289–291. Sen, Tansen. (2003). Buddhism, Diplomacy, and Trade: The Realignment of Sino-Indian Relations, 600–1400. Manoa: Asian Interactions and Comparisons, a joint publication of the University of Hawaii Press and the Association for Asian Studies. . Shen, Fuwei (1996). Cultural flow between China and the outside world. Beijing: Foreign Languages Press. . Sivin, Nathan. (1995). Science in Ancient China. Brookfield, Vermont: VARIORUM, Ashgate Publishing. Steinhardt, Nancy Shatzman. "The Tangut Royal Tombs near Yinchuan", Muqarnas: An Annual on Islamic Art and Architecture (Volume X, 1993): 369–381. Sung, Tz’u, translated by Brian E. McKnight (1981). The Washing Away of Wrongs: Forensic Medicine in Thirteenth-Century China. Ann Arbor: University of Michigan Press. Wagner, Donald B. "The Administration of the Iron Industry in Eleventh-Century China," Journal of the Economic and Social History of the Orient (Volume 44 2001): 175–197. Wang, Lianmao (2000). Return to the City of Light: Quanzhou, an