String Quartet No.6 in E flat(1943) String Quartet No.6 in B flat major String Quartet No.6 in B flat,Op.18 String quartet No.1 in E flat Op.12 String quartet No.13 in B flat Op.130 String quartet No.3 in B flat Op.67 String Quartet No.6 in B flat,Op.18 No.6 String quartet no. 12 in E flat, op. 127 String quartet no. 6 in B flat, op. 18 no. 6 String quartet no. 3 (1995)