“?MIXED MONO TONICITY THEOREMS FOR A SYSTEM OF ABSTRACT MEASURE DELAY INTEGRO-DIFFERENTIAL EQUATIONS” (1999) Biological Sciences - PJSIR, 42(5), pp. 236–241. Available at: https://www.biostaging.pjsir.org/index.php/biological-sciences/article/view/2169 (Accessed: 21 March 2026).