SpringerIranian Journal of Science and Technology (Sciences)1028-627629320050227INSTABILITY OF SOLUTIONS OF CERTAIN NONLINEAR VECTOR DIFFERENTIAL EQUATIONS OF ORDER SEVEN515521282510.22099/ijsts.2005.2825ENC. TUNC1Department of Mathematics, Faculty of Sciences and Literature,
Yüzüncü Yil University, 65080, Van, TurkeyE. TUNCDepartment of Mathematics, Faculty of Science and Literature,
Gaziosman Paşa University, 60080, Tokat, TurkeyJournal Article20040622Sufficient conditions are established under which the zero solution X = 0 of equation (2) is<br />unstable.http://ijsts.shirazu.ac.ir/article_2825_a8ec38612da6961acdeef265e22fd009.pdf