@article {9442,
	title = {Soft vibrational mode associated with incommensurate orbital order in multiferroic CaMn7 O12},
	journal = {Physical Review B - Condensed Matter and Materials Physics},
	year = {2014},
	doi = {10.1103/PhysRevB.90.104414},
	author = {Xinyu Du and Renliang Yuan and Lian Duan and Chong Wang and Yuwen Hu and Yuan Li}
}
