K. Balachandran, T. Nandha Gopal. Approximate controllability of non-linear evolution systems with time-varying delays. IMA J. Math. Control & Information, 23(4):499-513, 2006. [doi]
@article{BalachandranG06,
title = {Approximate controllability of non-linear evolution systems with time-varying delays},
author = {K. Balachandran and T. Nandha Gopal},
year = {2006},
doi = {10.1093/imamci/dnl002},
url = {http://dx.doi.org/10.1093/imamci/dnl002},
researchr = {https://researchr.org/publication/BalachandranG06},
cites = {0},
citedby = {0},
journal = {IMA J. Math. Control & Information},
volume = {23},
number = {4},
pages = {499-513},
}