@book{felix,
	title={Rational homotopy theory},
	author={F{\'e}lix, Yves and Halperin, Steve and Thomas, Jean-Claude},
	volume={205},
	year={2001},
	publisher={Springer}
}

@book{bous,
	title={On PL de Rham theory and rational homotopy type},
	author={Bousfield, Aldridge Knight and Gugenheim, Victor KAM},
	volume={179},
	year={1976},
	publisher={American Mathematical Soc.}
}

@article{hess,
	title={Rational homotopy theory: a brief introduction},
	author={Hess, Kathryn and others},
	journal={Contemporary Mathematics},
	volume={436},
	pages={175},
	year={2007},
	publisher={Providence, RI; American Mathematical Society; 1999}
}