Citations are a good measure of Impact of a work. Other measures
such
as citations in Handbooks/Textbooks, invited presentations in leading
forums
are also important but not considered here as it is not easy to gather
such data.
Authors in the above list who are currently in Indian Academic
Institutes:
(This is a manually screened list from the citeseer list of most
cited authors in 2005. It is likely to have some omissions.
Pl. notify
for corrections.)
Name  Position in list  No. of citatations (excl. selfcitations) 
No. of citations to Papers published after 1997 * 
K. Ramamritham (IITB)  279 
2659  
K.Deb (IITK) 
938 
1460 

N. Karmarkar (TIFR)  2212 
831 

S. Sudarshan (IITB)  2292  809 

M. Vidyasagar (TCS)  2270  815 

S. Chakrabarti (IITB)  1969 
897 

A. Ranade (IITB)  3312 
610 

K. Mulmuley (IITB)  2511  554  
S. Sarawagi (IITB)  3471  590 

S. Prasad (IITD) (multiple authors) 
4177 
511 

P. Thiagarajan (SMI)  4494  480 

J. Haritsa (IISc)  4137  515 

M. Joseph (TCS)  5134  388  
P. Pandya (TIFR)  6520 
355 

D. Dhamdhere (IITB)  8546 
278 

N. Garg (IITD)  4493 
480 

P. Jalote (IITK)  8398 
283  
V. Borkar (TIFR)  7185 
326 

S. Ganguly (IITK)  9815  176 
* manually determined using citeseer citation search ordered by date of paper being cited.
Some names representing multiple authors where omitted
after
manual checking that the relevant Indian author's individual citations
are well below 150.
On the other hand, some authors use multiple ways of writing names
leading to undercount.
Extracted manually from Citeseer Research Index.
Please
notify omissions.
Cita tions 
Type  Paper/Book  
429 
N. Karmarkar, A new polynomial time algorithm for linear
programming, Combinatorica, 4 (1984), pp. 373395. 

183  Abhiram G. Ranade. How to emulate shared memory. Journal of
Computer
and System Sciences, 42(3):307 326, June 1991. 

173  Book  K. Mulmuley. Computational Geometry: An Introduction Through Randomized Algorithms. Prentice Hall, New York, 1993.  
156  Book  M. Vidyasagar, Nonlinear systems analysis, PrenticeHall, 2nd edition, 1993.  
144  M. Joseph and P. Pandya, "Finding response times in a realtime system," Computer Journal, vol. 29 A02, pp. 3905, Oct. 1986. Comput. J. (UK).  
106 
Book  Desoer C.A. and M. Vidyasagar, Feedback Systems: InputOutput Properties, Electrical Science Series, Academic Press, New York., 1975.  
98 
K. Mulmuley, U. V. Vazirani & V. V. Vazirani.
Matching is
as easy as matrix inversion. Combinatorica 7 (1987) 105113. 

101 
S. Agarwal, R. Agrawal, P. M. Deshpande, A. Gupta, J. F.
Naughton,
R. Ramakrishnan, and S. Sarawagi. On the computation of multidimensional aggregates. In Proc. 22nd VLDB, pages 506521, Mumbai, Sept. 1996. 

71 
R.Agrawal, A.Gupta, and S. Sarawagi, Modeling multidimensional databases, In A. Gray and P. Larson, eds, Procs. ICDE, April 711, 1997.  
84  Book  Mark Spong and M. Vidyasagar. Robot Dynamics and Control. John Wiley and Sons, 1989.  
85  R. Ramakrishnan, D. Srivastava and S. Sudarshan. Coral: Control, relations and logic. In Proc. Intl. Conference on Very Large Data Bases, 1992.  
79  Jayant R. Haritsa, Michael J. Carey, and Miron Livny. On being optimistic about realtime constraints. ACM PODS, 1990.  
71 
Jayant R.
Haritsa,
Michael J. Carey, and Miron Linvy. "Dynamic realtime optimistic
concurrency control." In Prooceedings of the 11th RealTime Systems
Symposium, December 1990. 17 

78  Book  P. Jalote. Fault Tolerance in Distributed Systems. P.T.R Prentice Hall, Englewood Cliffs, NJ 07632, 1994. 