@inbook{615dec2aa7b148e68036dc3094e3cf8e,
title = "Ab initio calculations of the polarizability and hyperpolarizabilities of infinite periodic polymers by the sum-over-states approach",
author = "Christian Barbier and Joseph Delhalle and Jean-Marie Andr{\'e}",
note = "Publication editors : A.J. Heeger, J. Orenstein, J.A. Ulrich",
year = "1988",
language = "English",
isbn = "978-1-107-41097-8",
series = "Materials Research Society Symposium Proceedings",
publisher = "Materials Research Society",
pages = "143--148",
editor = "Heeger, {Alan J.} and Joseph Orenstein and Ulrich, {Donald R.}",
booktitle = "Nonlinear optical properties of polymers",
address = "United States",
}