TY - JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) A1 - WANG Ai-li T1 - Transcritical bifurcation for a pest management model with impulse and virus infection Y1 - JF - JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) JO - JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) SP - 1 EP - 8 VL - 55 IS - 7 UR - http://lxbwk.njournal.sdu.edu.cn N1 - 10.6040/j.issn.1671-9352.2.2019.319 ER -