Which technique was responsible for the very first confirmed exoplanet detections reported in 1992?

Answer

Pulsar Timing

The very first confirmed exoplanet detections occurred in 1992 around the pulsar PSR B1257+12 by monitoring minute delays in the arrival time of its regular radio pulses.

Which technique was responsible for the very first confirmed exoplanet detections reported in 1992?
astronomyorbitstarexoplanetdetection