Building iRefIndex requires a machine with at least 800 GB of disk space and 16 GB RAM and between 1 to 4 weeks elapsed time (20 - 80 hours developer time) - the majority of which is spent auditing the build and dealing with any detected problems. iRefIndex is entirely supported by Donaldson Research and receives no external funding. Small donations (less than $50) are appreciated and will be used for machine maintenance and upgrades and for web-site hosting costs. All donations can be acknowledged here on request. If you wish to make a larger donation,please contact me directly.