the valid orignial reference to the wikipedia galling article on a permanent uri urn nbn se kau diva you asked for the link to my scientific report on friction mechanics here it is peer viewed for a total of months by at least one professor and several high rank academics and university officials and published at academic archive on line diva on a permanent uri urn nbn se kau diva wallin h p an investigation of friction graphs ranking ability regarding the galling phenomenon in dry sofs contact adhesive material transfer and friction a free pdf document available here or found here or at here use search words galling harald wallin or the direct libris link here and may i humbly ad it will probably soon be a piece of scientific history in al it s simplicity and