Authors
Stelian Ion
“Gheorghe Mihoc-Caius Iacob” Institute of Statistical Mathematics and Applied Mathematics, Romanian Academy, Bucharest, Romania
Stefan-Gicu Cruceanu
“Gheorghe Mihoc-Caius Iacob” Institute of Statistical Mathematics and Applied Mathematics, Romanian Academy, Bucharest, Romania
Dorin Marinescu
“Gheorghe Mihoc-Caius Iacob” Institute of Statistical Mathematics and Applied Mathematics, Romanian Academy, Bucharest, Romania