Fixed point theory and applications RP Agarwal, M Meehan, D O'regan Cambridge university press, 2001 | 1558 | 2001 |
Positive solutions of differential, difference and integral equations RP Agarwal, D O'Regan, PJY Wong Springer Science & Business Media, 2013 | 1017 | 2013 |
Iterative construction of fixed points of nearly asymptotically nonexpansive mappings RP Agarwal, D O Regan, DR Sahu Journal of Nonlinear and convex Analysis 8 (1), 61, 2007 | 905 | 2007 |
Dynamic equations on time scales: a survey R Agarwal, M Bohner, D o'Regan, A Peterson Journal of Computational and Applied Mathematics 141 (1-2), 1-26, 2002 | 903 | 2002 |
Oscillation theory for difference and functional differential equations RP Agarwal Springer Science & Business Media, 2013 | 846 | 2013 |
Generalized contractions in partially ordered metric spaces RP Agarwal, MA El-Gebeily, D O'Regan Applicable Analysis 87 (1), 109-116, 2008 | 843 | 2008 |
Fixed point theory for Lipschitzian-type mappings with applications RP Agarwal, D O'Regan, DR Sahu Springer 6, x+ 368, 2009 | 821 | 2009 |
Infinite interval problems for differential, difference and integral equations RP Agarwal, D O'Regan Springer Science & Business Media, 2012 | 583 | 2012 |
On a new class of abstract impulsive differential equations E Hernández, D O’Regan Proceedings of the American Mathematical Society 141 (5), 1641-1649, 2013 | 580 | 2013 |
Variational approach to impulsive differential equations JJ Nieto, D O’Regan Nonlinear Analysis: Real World Applications 10 (2), 680-690, 2009 | 538 | 2009 |
Oscillation theory for second order linear, half-linear, superlinear and sublinear dynamic equations RP Agarwal, SR Grace, D O'Regan Springer Science & Business Media, 2013 | 483 | 2013 |
Fixed point theorems for generalized contractions in ordered metric spaces D O'Regan, A Petruşel Journal of Mathematical Analysis and Applications 341 (2), 1241-1252, 2008 | 478 | 2008 |
Theory of singular boundary value problems D O'regan World Scientific, 1994 | 418 | 1994 |
Oscillation criteria for second-order nonlinear neutral delay dynamic equations RP Agarwal, D O'Regan, SH Saker Journal of Mathematical Analysis and Applications 300 (1), 203-217, 2004 | 357 | 2004 |
Positive solutions for Dirichlet problems of singular nonlinear fractional differential equations RP Agarwal, D O'Regan, S Staněk Journal of Mathematical Analysis and Applications 371 (1), 57-68, 2010 | 334 | 2010 |
Existence theory for nonlinear integral and integrodifferential equations D O'Regan, M Meehan Springer Science & Business Media, 2012 | 318 | 2012 |
Existence theory for nonlinear ordinary differential equations D O'Regan Springer Science & Business Media, 1997 | 295 | 1997 |
On recent developments in the theory of abstract differential equations with fractional derivatives E Hernández, D O’Regan, K Balachandran Nonlinear Analysis: Theory, Methods & Applications 73 (10), 3462-3471, 2010 | 282 | 2010 |
Existence of solutions for semi-linear abstract differential equations with not instantaneous impulses M Pierri, D O’Regan, V Rolnik Applied mathematics and computation 219 (12), 6743-6749, 2013 | 277 | 2013 |
Oscillation theory for second order dynamic equations RP Agarwal, SR Grace, D O'Regan CRC Press, 2002 | 264 | 2002 |