A note on controllability of impulsive systems RK George, AK Nandakumaran, A Arapostathis Journal of Mathematical Analysis and Applications 241 (2), 276-283, 2000 | 133 | 2000 |

Trajectory controllability of nonlinear integro-differential system DN Chalishajar, RK George, AK Nandakumaran, FS Acharya Journal of the Franklin Institute 347 (7), 1065-1075, 2010 | 57 | 2010 |

Homogenization of a nonlinear degenerate parabolic differential equation. AK Nandakumaran, M Rajesh Electronic Journal of Differential Equations (EJDE)[electronic only] 2001 …, 2001 | 50 | 2001 |

Exact controllability of the nonlinear third-order dispersion equation RK George, DN Chalishajar, AK Nandakumaran Journal of Mathematical Analysis and Applications 332 (2), 1028-1044, 2007 | 43 | 2007 |

Error bounds for a Dirichlet boundary control problem based on energy spaces S Chowdhury, T Gudi, A Nandakumaran Mathematics of Computation 86 (305), 1103-1126, 2017 | 41 | 2017 |

Generalization of unfolding operator for highly oscillating smooth boundary domains and homogenization S Aiyappan, AK Nandakumaran, R Prakash Calculus of Variations and Partial Differential Equations 57, 1-30, 2018 | 34 | 2018 |

Recovery of the diffuse correlation spectroscopy data-type from speckle contrast measurements: towards low-cost, deep-tissue blood flow measurements K Murali, AK Nandakumaran, T Durduran, HM Varma Biomedical optics express 10 (10), 5395-5413, 2019 | 32 | 2019 |

Schrödinger equation and the oscillatory semigroup for the Hermite operator AK Nandakumaran, PK Ratnakumar Journal of Functional Analysis 224 (2), 371-385, 2005 | 27 | 2005 |

Periodic controls in an oscillating domain: controls via unfolding and homogenization AK Nandakumaran, R Prakash, BC Sardar SIAM Journal on Control and Optimization 53 (5), 3245-3269, 2015 | 24 | 2015 |

Asymptotic analysis and error estimates for an optimal control problem with oscillating boundaries AK Nandakumaran, R Prakash, JP Raymond ANNALI DELL'UNIVERSITA'DI FERRARA 58, 143-166, 2012 | 24 | 2012 |

Existence and approximations of solutions to some fractional order functional integral equations M Muslim, AK Nandakumaran The Journal of Integral Equations and Applications, 95-114, 2010 | 23 | 2010 |

Homogenization of low-cost control problems on perforated domains T Muthukumar, AK Nandakumaran Journal of mathematical analysis and applications 351 (1), 29-42, 2009 | 23 | 2009 |

An inverse problem for Helmholtz equation M Tadi, AK Nandakumaran, SS Sritharan Inverse Problems in Science and Engineering 19 (6), 839-854, 2011 | 21 | 2011 |

Optimal control problem in a domain with branched structure and homogenization S Aiyappan, AK Nandakumaran Mathematical Methods in the Applied Sciences 40 (8), 3173-3189, 2017 | 20 | 2017 |

Exact internal controllability for a hyperbolic problem in a domain with highly oscillating boundary U De Maio, AK Nandakumaran Asymptotic Analysis 83 (3), 189-206, 2013 | 20 | 2013 |

On the equivalence of speckle contrast-based and diffuse correlation spectroscopy methods in measuring in vivo blood flow K Murali, AK Nandakumaran, HM Varma Optics Letters 45 (14), 3993-3996, 2020 | 17 | 2020 |

Semi-linear optimal control problem on a smooth oscillating domain S Aiyappan, AK Nandakumaran, R Prakash Communications in Contemporary Mathematics 22 (04), 1950029, 2020 | 17 | 2020 |

Ultrasound-modulated optical tomography: recovery of amplitude of vibration in the insonified region from boundary measurement of light correlation HM Varma, KP Mohanan, N Hyvönen, AK Nandakumaran, RM Vasu JOSA A 28 (11), 2322-2331, 2011 | 17 | 2011 |

Homogenization of a parabolic equation in perforated domain with Neumann boundary condition AK Nandakumaran, M Rajesh Proceedings of the Indian Academy of Sciences-Mathematical Sciences 112 (1 …, 2002 | 17 | 2002 |

Exact internal controllability for the wave equation in a domain with oscillating boundary with Neumann boundary condition U De Maio, AK Nandakumaran, C Perugia Evol. Equ. Control Theory 4 (3), 325-346, 2015 | 16 | 2015 |