Benson, A., Farahi, A., Cole, S., Moustakas, L., Jenkins, A., Lovell, M., …Frenk, C. (2013). Dark matter halo merger histories beyond cold dark matter - I. Methods and application to warm dark matter. Monthly Notices of the Royal Astronomical Society, 428(2), 1774-1789. https://doi.org/10.1093/mnras/sts159