@inbook{b56f28a0efd7483f8baa83aa17210d58,
title = "Death of distance in science? : a gravity approach to research collaboration",
abstract = "No abstract.",
author = "K. Frenken and J. Hoekman and S. Kok and R. Ponds and {Oort, van}, F.G. and {Vliet, van}, J.C.",
year = "2009",
doi = "10.1007/978-3-540-92267-4",
language = "English",
isbn = "978-3-540-92266-7",
series = "Understanding Complex Systems",
publisher = "Springer",
pages = "43--57",
editor = "A. Pyka and A. Scharnhorst",
booktitle = "Innovation Networks: new approaches in modelling and analyzing",
address = "Germany",
}