To cite the 'ASSA' package in publications use:
de Carvalho M, Martos G (2020). ASSA: Applied Singular Spectrum Analysis. R package version 2.0.
Corresponding BibTeX entry:
@Manual{, title = {ASSA: Applied Singular Spectrum Analysis}, author = {M. {de Carvalho} and G. Martos}, year = {2020}, note = {R package version 2.0}, }