Corrigendum to "Magnetron configurations dependent surface properties of SnO2 thin films deposited by sputtering process" [Vacuum 177 (2020) 109353]. (February 2021) - Gangwar, Amit Kumar; Godiwal, Rahul; Jaiswal, Jyoti; Baloria, Vishal; Pal, Prabir; Gupta, Govind; Singh, Preetam