@article{article4a2b5ae7, title = {Character of magnetic excitations in a quasi-one-dimensional antiferromagnet near the quantum critical points: Impact on magnetoacoustic properties}, author = {Chiatti, O and Sytcheva, A and Wosnitza, J and Zherlitsyn, S and Zvyagin, A A and Zapf, V S and Jaime, M and Paduan-Filho, Armando}, year = {2008}, doi = {10.1103/physrevb.78.094406}, journal = {Physical Review B} }