GTCM1999, 08. 09 - 13, Tantai & Weihai, Shandong, China


10th Graph Theory & 7th Combinatorial Mathematics National Conference, 08-11-1999, Group photo, Yantai University, Shandong, China
     


Leigong island, 08-12-1999, Weihai, Shandong, China