Jeon In Ho: On the Taylor-Browder spectrum. II. In: Acta scientiarum mathematicarum, (65) 3-4. pp. 651-655. (1999)
Jeon In Ho and Lee Woo Young: On the Taylor-Weyl spectrum. In: Acta scientiarum mathematicarum, (59) 1-2. pp. 187-193. (1994)