@article{2119, author = {Rosalba Perna and R. Soria and D. Pooley and L. Stella}, title = {How rapidly do neutron stars spin at birth? Constraints from archival X-ray observations of extragalactic supernovae}, year = {2008}, journal = {Monthly Notices of the Royal Astronomical Society}, volume = {384}, pages = {1638-1648}, month = {Jan-03-2008}, issn = {0035-8711}, doi = {10.1111/j.1365-2966.2007.12821.x}, }