On connected domination in unit ball graphs. - Sergiy Butenko; Sera Kahruman-Anderoglu; Oleksii Ursulenko (Optim. Lett., 2011)

A global optimization algorithm for solving the minimum multiple ratio spanning tree problem. - Oleksii Ursulenko; Sergiy Butenko; Oleg A. Prokopyev (J. Glob. Optim., 2013)