Cavalli-Sforza and Edwards, Dc (1967)
Dc
=
2
Π
r
∑
j
r
2
(
1
−
∑
i
m
j
x
ij
y
ij
)
Dc={2}over{{%PI}r} sum from{j} to{r} sqrt{2(1 - sum from i to m_j sqrt{x_ij y_ij} )}