Kauffmann-Zeh A. ea, 1997
Kauffmann-Zeh A., Rodrigues-Vicciana P., Uriich E., Gilbert G., Coffer P., Downward J. and Evan G. 1997, Nature, 385, 544-548.
Kauffmann-Zeh A., Rodrigues-Vicciana P., Uriich E., Gilbert G., Coffer P., Downward J. and Evan G. 1997, Nature, 385, 544-548.