Lupaş-Durrmeyer operators. Deo, Naokant (2004) JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Lyapunov inequalities for time scales. Bohner, Martin, Clark, Stephen, Ridenhour, Jerry (2002) Journal of Inequalities and Applications [electronic only]
Lyapunov type integral inequalities for certain differential equations. Pachpatte, B.G. (1997) Georgian Mathematical Journal