Chouet, Bernard:Long-period volcano seismicity: its sources and use in eruption forecasting.Nature,28.3.1996, 380. vsk, nro 6572, s. 309–316.doi:10.1038/380309a0Artikkelin verkkoversio.
Chouet, Bernard:Long-period volcano seismicity: its sources and use in eruption forecasting.Nature,28.3.1996, 380. vsk, nro 6572, s. 309–316.doi:10.1038/380309a0Artikkelin verkkoversio.