The Drake Equation: Estimating the Prevalence of ...
Preview
Albrecht, Simon, Joshua N. Winn, John A. Johnson, Andrew W. Howard, Geoffrey
W. Marcy, R. Paul Butler, Pamela Arriagada, Jeffrey D. Crane, Stephen A.
Shectman, Ian B. Thompson, Teruyuki Hirano, Gaspar Bakos, and Joel D.
Hartman.