A SETI search of nearby solar-type stars at the 203-GHz positronium hyperfine resonance

Observers
STEFFES
DeBOER
Link
FULL PAPER
Reference
Steffes, P.G. and DeBOER, D.R., "A SETI Search of Nearby Solar-Type Stars at the 203 GHz Positronium Hyperfine Resonance," Icarus 107, pp. 215-218 (1994).
Comments

No artificial signals detected near positronium line.