ASYMMETRIC ATOMIC IMAGES OF STM RESULTING FROM PROBING TIPS W. Mizutani, H. Tokumoto, H. Bando, M. Shigeno, M. Tanaka, M. Ono et K. Kajimura J. Phys. Colloques, 48 C6 (1987) C6-73-C6-78 DOI: 10.1051/jphyscol:1987612