9Munn R E. The design of environmental monitoring systems, Prog PhysGeog,4 : 567-576.
10Drozdov 0 A, Shepelevskii A A. The theory of interpolation in a sto- chastic field of meteorological elements and its application to meteoro- logical elements and its application to meteorological map and network rationalization problems. Trudy Niu Gugms Seriesl, 1946:13.