"Sung Ick Cha"@en . . "researcher"@en . . "Sung Ick Cha"@en . "Sung-Ick Cha"@en . . "wetenschapper"@nl . "\u0434\u043E\u0441\u043B\u0456\u0434\u043D\u0438\u043A"@uk . . "Sung Ick Cha"@en . .