Automatic fuzzy-logic recognition of anomalous activity on long geophysical records: Application to electric signals associated with the volcanic activity of La Fournaise volcano (Reunion Island),
Zlotnicki, J., J. L. Le Mouel, A. Gvishiani (2005),
Earth And Planetary Science Letters, 234, 1–2 p. 261–278,
10.1016/j.epsl.2005.01.040.