On a condition for obtaining an explicit solution of optimum requirement spanning tree. - Tsutomu Anazawa (Networks, 1999)

Optimum requirement spanning trees and reliability of tree networks. - Tsutomu Anazawa; Takayuki Kodera; Masakazu Jimbo (Networks, 1999)

Lexicographically Optimum Traffic Trees with Maximum Degree Constraints. - Tsutomu Anazawa (Ars Comb., 2001)