@article {PN0106,
	title = {Discrete combinatorial circuits emerging in neural networks: A mechanism for rules of grammar in the human brain?},
	author = {Friedemann Pulverm{\"u}ller AND Andreas Knoblauch},
	year = {2009},
	journal = {Neural Networks},
	volume = {22},
	pages = {161{\textendash}172}
}