@book{9326,
  author = {M. Karplus and R. Porter},
  title = {Atoms and Molecules: An Introduction for Students of Physical Chemistry},
  year = {1970},
  publisher = {Benjamin-Cummings Pub Co},
  issn = {ISBN-10: 080535218X ISBN-13: 978-0805352184},
  note = {JILA Pub. 705},
}