Two-particle interferometry, a second-order interference effect, is explored as another possible tool to distinguish between massive Dirac and Majorana neutrinos. A simple theoretical framework is discussed in the context of several gedanken experiments. The method can in principle provide both the mass scale and the quantum nature of the neutrino for a certain class of incoherent left-handed source currents.
The Silk Road: A Review Essay on Empires of the Silk Road: A History of Central Eurasia from the Bronze Age to the Present. by Christopher I. Beckwith (Princeton University Press, 2009).