P.H. Lindenmeyer, H. Beumer, R. Hosemann, The origin in thermodynamic stability of paracrystals in Physik der Duroplaste und anderer Polymerer form Progress in Colloid and Polymer Science (Series) Vol. 64 (1978), Springer Berlin, Heidelberg, pp. 232-237, ISBN978-3-7985-1806-3doi:10.1007/BFb0117526