Becker, Helmut. "From Nanotesla to Picotesla - a New Window for Magnetic Prospecting in Archaeology." Archaeological Prospection 2 (1995): 217-228.

Becker, Helmut. "From Nanotesla to Picotesla - a New Window for Magnetic Prospecting in Archaeology." Archaeological Prospection 2 (1995): 217-228.