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	title={Hard and soft clustering of categorical time series based on
	two novel distances
	with an application to biological sequences},
	author={L{\'o}pez-Oriona, {\'A}ngel and Vilar, Jos{\'e} A and D’Urso,
	Pierpaolo},
	journal={Information Sciences},
	volume={624},
	pages={467--492},
	year={2023},
	publisher={Elsevier}
}

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	year={2008},
	publisher={Springer}
}

@book{weiss2018introduction,
	title={An introduction to discrete-valued time series},
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	year={2018},
	publisher={John Wiley and Sons}
}

@article{weiss2008visual,
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	year={2008},
	publisher={Elsevier}
}

@article{weiss2011empirical,
	title={Empirical measures of signed serial dependence in categorical
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	author={Wei{\ss}, Christian H},
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	volume={81},
	number={4},
	pages={411--429},
	year={2011},
	publisher={Taylor and Francis}
}

@article{weiss2013serial,
	title={Serial dependence of NDARMA processes},
	author={Wei{\ss}, Christian H},
	journal={Computational Statistics and Data Analysis},
	volume={68},
	pages={213--238},
	year={2013},
	publisher={Elsevier}
}

@article{weiss2019distance,
  title={Distance-based analysis of ordinal data and ordinal time series},
  author={Wei{\ss}, Christian H},
  journal={Journal of the American Statistical Association},
  year={2019},
  publisher={Taylor and Francis}
}

@phdthesis{ribler1997visualizing,
	title={Visualizing categorical time series data with applications to
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	communications network traces},
	author={Ribler, Randy Louis},
	year={1997},
	school={Virginia Polytechnic Institute and State University}
}

@article{stoffer1993spectral,
	title={Spectral analysis for categorical time series: Scaling and the
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	envelope},
	author={Stoffer, David S and Tyler, David E and McDougall, Andrew J},
	journal={Biometrika},
	volume={80},
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}

@article{stoffer2000spectral,
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	publisher={JSTOR}
}

@article{lopez2023submitted,
	title={Fuzzy clustering of ordinal time series based on two novel distances with     financial applications},
	author={L{\'o}pez-Oriona, {\'A}ngel and Wei{\ss}, Christian and Vilar, Jos{\'e} A},
	journal={Manuscript submitted for publication},
	pages={000-000},
	year={2023},
	publisher={JSTOR}
}



