title: Corrections to Morse and Ingard's variational-based treatment of weakly-nonlinear acoustics in lossless gases.
abstract: Errors in Morse and Ingard's treatment of the topic of weakly-nonlinear acoustics in Sec. 6.2 of their book [Theoretical Acoustics (1968)] are noted and corrected.
authors.affiliation: Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.forename: Ivan C
authors.initials: IC
authors.lastname: Christov
authors.affiliation: Acoustics Division, U.S. Naval Research Laboratory, Stennis Space Center, Mississippi 39529, USA.
authors.forename: P M
authors.initials: PM
authors.lastname: Jordan