1. Bishop, E.: Conditions for the analyticity of certain sets. Michigan Math. J.11, 289?304 (1964)
2. Demailly, J.-P.: Formules de Jensen en plusieurs variables et application arithmétiques, préprint Université de Paris VI. Bull. Soc. Math. France. Apparaitre (1981)
3. Federer, H.: Geometic Measure Theory. Berlin-Heidelberg-New-York: Springer-Verlag 1969
4. Harvey, R., King, J.: On the structure of positive currents. Invent. Math.15, 47?52 (1972)
5. Pure Applied Math.;R. Harvey,1974