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Re:Mastercard sued for $19B in Britain's biggest damages claim by bjterry on Friday September 09, 2016 @01:57PM (#12464569)
Here is a recent blog post that has some references to economics research papers around this general topic, but likely not directly addressing your exact claim. Nonetheless, you may find it interesting: http://slatestarcodex.com/2016/09/07/reverse-voxsplaining-br...
Re:Mastercard sued for $19B in Britain's biggest damages claim by cmdrfred on Friday September 09, 2016 @10:05PM (#12467297)
Grandparent is correct.

For GSK: R&D was 15% of their budget, while 'selling, general and administration' was 39%.[1]

[1]http://www.bizjournals.com/triangle/news/2016/07/19/where-gs...