Based on the articles
"The second data release from the European Pulsar Timing Array. I. The dataset and timing analysis", by EPTA Collaboration 2023, A&A, 678, A48
"The second data release from the European Pulsar Timing Array. II. Customised pulsar noise models for spatially correlated gravitational waves", by EPTA Collaboration 2023, A&A, 678, A49
"The second data release from the European Pulsar Timing Array. III. Search for gravitational wave signals", by EPTA Collaboration 2023, A&A, 678, A50