‘A’
K.-H. Lee, S. H. Kim, Y. S. Yoon, and S.-K. Kim, “A study on compensation of distorted 3D depth in the triple fresnel lenses floating image system,” The 7th International Meeting on Information Display (IMID 2007), Daegu, Korea, paper P2-63, pp. 1490-1493, Aug. 2007.

‘B’
S.-W. Min, M. Hahn, J. Kim, and B. Lee, "Three-dimensional electro-floating display system using an integral imaging method," Optics Express, vol. 13, no. 12, pp. 4358-4369, 2005.