@inbook{inbook, title  = {{Partial Differential Equations, Wave Equation}},

 publisher = {{Springer New York}},

 url = {{https://doi.org/10.1007/978-1-4419-9863-7_275 }},

 year = {{2013}},

 month = {{1}},

 author = {{Clayton RH}},

 doi = {{10.1007/978-1-4419-9863-7_275}},

 isbn = {{9781441998620}},

 pages = {{1638-1640}},

 note = {{Accessed on 2025/11/29}}}