Open AccessA STUDY OF POSITIVE PERIODIC SOLUTIONS FOR SECOND-ORDER DELAYED DIFFERENTIAL EQUATIONS
Author(s) -
Yajun Liang,
Di Zhang
Publication year - 2018
Publication title -
journal of pure and applied mathematics : advances and applications
Language(s) - English
Resource type - Journals
ISSN - 0974-9381
DOI - 10.18642/jpamaa_7100121933
Subject(s) - order (exchange) , mathematics , differential equation , mathematical analysis , economics , finance