1) Institute for Mediterranean Agricultural and Forest Systems-Italian National Research Council (ISAFoM-CNR) Ercolano (NA), Italy 2) Delft University of Technology, Delft, The Netherlands (maria. riccardi@ cnr. it)
Journal article published in 1970 by
M. Riccardi,
S. Alfieri,
A. Bonfante,
A. Basile 
,
P. Di Tommasi,
M. Menenti,
F. De Lorenzi
,
P. Di Tommasi,
M. Menenti,
F. De Lorenzi
