1) K. Ryu, H.J. Kim, K.C. Seong, J.W. Cho, E.Y. Lee, H.B. Jin and K.S. Ryu, "Test results of the small model coil for a small-sized superconducting magnetic energy storage devices",
 
    IEEE Trans. Magn. vol. 35, no. 5, pp.4103-4105, 1999.
 
 
 
2) K. Ryu, H.J. Kim, K.C. Seong, J.W. Cho, Y.K. Kwon, K.S. Ryu, and B.J. Choi, "Stability and quench  test results of the kA class conductor for a μSMES coil," IEEE Trans. Applied Superconductivity,
 
    vol. 10, no. 1, pp.828-831, 2000.
 
 
 
3) Kyeong Dal Choi, Hee Joon Lee, Gueesoo Cha, Kyung Woo Ryu, Woo Seok Kim and Song Yop Hahn,  "Test of a high Tc superconducting power transformer," IEEE Trans. Applied Superconductivity,
 
    vol. 10, no. 1, pp.853-856, 2000.
 
 
 
4) K. Ryu, K.B. Park, G. Cha, "Effect of the neighboring tape's ac currents on transport current loss of a  Bi-2223 tape," IEEE Trans. Applied Superconductivity, vol. 11, no. 1, pp.2220-2223, 2001.
 
 
 
5) Hee Joon Lee, Gueesoo Cha, Ji Kwang Lee, Kyeong Dal Choi, Kyung Woo Ryu, and Song Yop Hahn,  "Test and characteristic analysis of a HTS power transformer," IEEE Trans. Applied Superconductivity,
 
    vol. 11, no. 1, pp.1486-1489, 2001.
 
 
 
6) K. Ryu, H.J. Kim, K.C. Seong, J.W. Cho, S.W. Kim, Y.K. Kwon and K.S. Ryu, "Recovery current  characteristics of a kA class conductor for a superconducting magnetic energy storage device," IEEE
 
   Trans. Applied Superconductivity, vol. 12, no. 1, pp.796-799, 2002.
 
 
 
7) H.J. Kim, K.C. Seong, J.W. Cho, E.Y. Lee, S.W. Kim, Y.K. Kwon and K.S. Ryu, and K. Ryu, "Fabrication  and test of the model coil for a SMES," IEEE Trans. Applied Superconductivity, vol. 12, no. 1,
 
    pp.770-773, 2002.
 
 
 
8) S.W. Lee, H.J. Lee, G.S. Cha, J.K. Lee, K.D. Ryu, K. Ryu, and S.Y. Han, "Test rsults of a three phase  HTS transformer with double pan cake windings," IEEE Trans. Applied Superconductivity, vol. 12, no. 1,     pp.808-811, 2002.
 
 
 
9) S.Y. Choi, D.S. Kim, W.S. Nah, J.H. Joo, J.H. Jung, and K. Ryu, "AC transport current loss in stacked  HTS tapes," Physica C 372-376, pp.1746-1749, 2002.
 
 
 
10) K. Ryu, B.J. Choi, and Y.H. Chun, "Magnetization Loss Characteristics in a Stack of Bi-2223 Tapes," IEEE Trans. Applied Superconductivity, vol. 13, no. 2, pp.2360-2363, 2003.
 
 
 
11) H.J. Kim, K.C. Seong, J.W. Cho, S.W. Kim, Y.K. Kwon, and K. Ryu, "Fabrication and Test of a  Superconducting Coil for SMES Systems," IEEE Trans. Applied Superconductivity, vol. 13, no. 2,
 
     pp.1863-1866, 2003.
 
 
 
12) S.W. Kim, J.H. Bae, J.W. Cho, H.J. Kim, M.S. Sohn, K.C. Seong, and K. Ryu, "Effect of Soldering on  Current Capacity and AC Loss of Large Superconducting Solenoids," IEEE Trans. Applied      Superconductivity, vol. 13, no. 2, pp.1542-1545, 2003.