@inbook{inbook, title = {{Partial Differential Equations, Wave Equation}}, publisher = {{Springer New York}}, url = {{}}, year = {{2013}}, month = {{2}}, author = {{Clayton RH}}, doi = {{10.1007/978-1-4419-9863-7_275}}, isbn = {{9781441998620}}, pages = {{1638-1640}}, note = {{Accessed on 2024/12/22}}}