@article {8587,
	title = {Slip requirements for coherent tilt of hcp epitaxial crystals},
	journal = {Physical Review B},
	year = {1991},
	pages = {4060-4063},
	doi = {10.1103/PhysRevB.44.4060},
	author = {J.C.A. Huang and R.-R. Du and C.P. Flynn}
}
