Corrigendum to "Investigation of sandstone erosion by continuous and pulsed water jets" [J Manuf Process 42 (2019) 121–130]. (March 2020) - Raj, Piush; Hloch, Sergej; Tripathi, Rupam; Srivastava, Madhulika; Nag, Akash; Klichová, Dagmar; Klich, Jiří; Hromasová, Monika; Muller, Miroslav; Miloslav, Linda; Chattopadhyaya, Somnath; Adamcik, Pavel