@techreport{weko_229530_1,
   author	 = "Hideki,Kakeya and Tatsuya,Kanzaki",
   title	 = "Anomalous Biases of Reverse Mutations in SARS-CoV-2 Variants",
   year 	 = "2023",
   institution	 = "University of Tsukuba, University of Tsukuba",
   number	 = "8",
   month	 = "nov"
}