The first published report of the phenomenon occurred in 1979, by which time Steglich had taken up a faculty position at the University of Darmstadt, and confirmed the existence of bulk superconductivity through the measurement of the specific heat anomaly at the transition temperature of Tc=0.5K.
The initial documented account of the phenomenon emerged in 1979, by which point Steglich had assumed a faculty role at the University of Darmstadt, and validated the presence of bulk superconductivity through the measurement of the specific heat deviation at the transition temperature of Tc=0.5K.