@article{Gaburov2008b, author = {E. Gaburov and A. Gualandris and S. Portegies Zwart}, doi = {10.1111/j.1365-2966.2007.12731.x}, issn = {0035-8711}, journal = {Monthly Notices of the Royal Astronomical Society}, number = {1}, pages = {376-385}, title = {On the onset of runaway stellar collisions in dense star clusters: I. Dynamics of the first collision}, volume = {384}, year = {2008} }