Improved Approximation Algorithms for Biconnected Subgraphs via Better Lower Bounding Techniques.

Naveen Garg Santosh Vempala Aman Singla Improved Approximation Algorithms for Biconnected Subgraphs via Better Lower Bounding Techniques. 103-111 1993 SODA db/conf/soda/soda93.html#GargVS93