Progress of Research on Endangered Situation of Plant Species
jin shan; tie jun; ru wen-ming; zhang gui-ping; qin yong-yan(1.department of biology and chemistry; changzhi university; changzhi 046011; 2.college of nature conversation; beijing forestry university; beijing 100083)
A Note on Dolfi Theorem A
wu hui-jun1; ma yu-fang2(1.department of mathematics; changzhi university; changzhi 046011; 2.yangquan communication school; yangquan 045000)