@article {1311256,
	title = {A Basis for Orbital Symmetry Rules},
	journal = {Angew. Chem. Int. Ed. Engl.},
	volume = {18},
	year = {1979},
	note = {106},
	pages = {377-392},
	author = {Metieu, H. and Ross, J. and Whitesides, G. M.}
}
