الإتاحة: http://eprints.bice.rm.cnr.it/15881Test/http://eprints.bice.rm.cnr.it/15881/1/ncc9089.pdfTesthttps://www.sif.it/riviste/sif/ncc/econtents/2005/028/04-05/article/26Test
الإتاحة: http://eprints.bice.rm.cnr.it/15770Test/http://eprints.bice.rm.cnr.it/15770/1/ncc9042.pdfTesthttps://www.sif.it/riviste/sif/ncc/econtents/2005/028/04-05/article/72Test
الإتاحة: http://eprints.bice.rm.cnr.it/15711Test/http://eprints.bice.rm.cnr.it/15711/1/ncc9037.pdfTesthttps://www.sif.it/riviste/sif/ncc/econtents/2005/028/04-05/article/77Test
الإتاحة: http://eprints.bice.rm.cnr.it/15579Test/http://eprints.bice.rm.cnr.it/15579/1/ncc8987.pdfTesthttps://www.sif.it/riviste/sif/ncc/econtents/2005/028/03/article/38Test