You know a link is a persistent link if you see the word 'EZProxy' in the link followed by the library's information as shown below.
Fela fa o fetsa go kwala lefoko, e tlhomamisa gore a a lefoko leo le teng mo seoleding sa mafoko. fa lefoko le seyo mo seoleding, o tlaa bona le segetswe mola o mohibidu ko tlase jaaka mo sekaing se se latelang: