@article{https://resolver.caltech.edu/CaltechAUTHORS:BURpnas70,
    title = "Is the Breakdown of the Born-Oppenheimer Approximation Responsible for Internal Conversion in Large Molecules?",
    journal = "Proceedings of the National Academy of Sciences of the United States of America",
    year = "1970",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:BURpnas70",
    id = "record",
    issn = "0027-8424",
    volume = "66"
}