BOOK I
GENERAL PART
TITLE II
ON CRIME
CHAPTER V
CAUSES FOR EXCLUSION
SECTION II
CAUSES FOR EXCLUSION OF GUILT
Article 48. Excess of legitimate defense
1. Means which, given their nature or extent of use, are excessive to those required for the defensive action taken by the perpetrator may result in special mitigation of the penalty that the crime would otherwise carry.
2. The perpetrator is not punishable if the excess of means used in legitimate defense are due to a justifiable disturbance, fear or surprise.
Other defences - national proceedings
EDIT.