1. Fringuelli F, Taticchi A (2002) The Diels-Alder reaction. Selected Practical Methods. John Wiley & Sons, New York
2. Fleming I (1999) Pericyclic reactions. Oxford University Press Inc., New York
3. Nicolau KC, Snyder SA, Montagnon T, Vassilikogiannakis G (2002). Angew Chem Int Ed 41:1668
4. Diels O, Alder K (1928). Justus Liebigs Ann Chem 98:460
5. Carruthers W (1978) Some Modern Methods of Organic SynthesisSecond edn. Cambridge University Press, Cambridge