“…The following literature works of wave propagation in different materials may also be mentioned, i.e. Achenbach (1976), Khurana and Tomar (2007), Das et al (2008), Aouadi (2009), Sharma and Kumar (2009), Passarella and Zampoli (2010), Singh (2010, 2011, 2013), Singh and Lianngenga (2016, 2017), Singh et al (2006), Singh and Kumar (1998), Mitra and Bhattacharyya (2017), Othman et al (2017), Marin and Nicaise (2016), Marin and Craciun (2017), Marin et al (2017), Khan et al (2018), and Codarcea-Munteanu and Marin (2019).…”