Arrange these contributions to the debate about law and morality in chronological order.

1. Austin defines law as the command of a sovereign, 1832
2. Radbruch publishes his formula on intolerable injustice, 1946
3. The Wolfenden Report reaches its conclusions, 1957
4. Hart's The Concept of Law appears, 1961
5. Fuller sets out the internal morality of law, 1964

The clustering is the point: four of the five fall within eighteen years of one another, and all four are downstream of the same event. The question of whether a validly enacted rule can be too unjust to count as law stopped being academic in 1945, and the modern literature is an argument about what to say to the German courts that had to answer it.