+ expression difference
27-point difference sheme
2nd-order difference ARED
3-bands grads difference method
3-D explicit finite difference
3D finite difference method
3D finite difference migration
3-point and 5-point difference schemes
a difference equation of single-species
a distinction without a difference
Absolute cost difference
Absolute Difference Algorithm
Absolute displaced frame difference
Absorbance difference method
accumulated frame difference