CIRCUMSTELLAR MEDIUM CONSTRAINTS ON THE ENVIRONMENT OF TWO NEARBY TYPE IA SUPERNOVAE: SN 2017CBV AND SN 2020NLB ArticleSand D.J., Jencson J.E., Lundquist M.J., Smith N., Wyatt S., Sarbadhicary S.K., Chomiuk L., Pellegrino C., Burke J., Hiramatsu D., Howell D.A., Mccully C., Misra K., Dastidar R., Brown P.J., Itagaki K., Valenti S., Bostroem K.A., Dong Y., Swift J.J. ...The Astrophysical Journal. Том 922. 2021.