The impact of COVID-19 pandemic on non-cyclical consumer companies based on their series of financial performance using fuzzy c-means clusteringDodi Devianto, Fajrul Ichsan Kamil, Maiyastri and Yudiantri AsdiE3S Web Conf., 464 (2023) 18001DOI: https://doi.org/10.1051/e3sconf/202346418001