Approximating the Shallow-Light Steiner Tree Problem When Cost and Delay are Linearly Dependent. - Longkun Guo; Nianchen Zou; Yidong Li (PAAP, 2014)

Improved Approximating Algorithms for Computing Energy Constrained Minimum Cost Steiner Trees. - Nianchen Zou; Longkun Guo (ICA3PP (1), 2015)