@article{expansion-17,
 author = {Prakash, Gyan and Pal, Koushik and Jain, Manish and Waghmare, U. V. and Sood, A. K.},
 doi = {10.1103/PhysRevB.96.075109},
 issue = {7},
 journal = {Physical Review B},
 month = {Aug},
 numpages = {7},
 pages = {075109},
 pdf = {PhysRevB.96.075109.pdf},
 title = {Origin of the thermal expansion anomaly in layered Bi$_2$X$_3$ topological insulators: Ultrafast time-resolved pump-probe experiments and theory},
 url = {https://link.aps.org/doi/10.1103/PhysRevB.96.075109},
 volume = {96},
 year = {2017}
}