Is the direct impact between two magazines and P ( i , i ) the self-citation rate measures . is the direct impact between any two journals and P ( i , i ) measures the self-citation rate .
Adakah kesan langsung antara dua majalah dan P (i, i) langkah-langkah kadar kutipan diri. adalah kesan langsung antara mana-mana dua jurnal dan P (i, i) mengukur kadar bacaan diri.