@article {6394,
	title = {Stability of p-orbital Bose-Einstein condensates in optical checkerboard and square lattices},
	journal = {Physical Review A - Atomic, Molecular, and Optical Physics},
	year = {2013},
	doi = {10.1103/PhysRevA.87.013635},
	author = {Yong Xu and Zhu Chen and Hongwei Xiong and W. Vincent Liu and Biao Wu}
}
