IMU Correspondence

• Circular Letter 01/1996 from March 11, 1996
• Circular Letter 01/1997 (PostScript-Version) from January 1, 1997
• Circular Letter 02/1997 from February 26, 1997
• Circular Letter 03/1997 from July 7, 1997
• Circular Letter 04/1997 from December 15, 1997
• Circular Letter 01/1998 from January 1998
• Circular Letter 02/1998 from March 1998