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AUTHOR INFORMATION
Corresponding Author
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Author Contributions
†These authors contributed equally to this work.
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Notes
The authors declare no competing financial interest.
ACKNOWLEDGMENTS
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We thank Prof. C. N. R. Rao for his constant support and
encouragement. J. Hoque thanks JNCASR for a junior research
fellowship (JRF). This work was supported by the Fast Track
project (SR/FT/Cs-097/2009) and a Ramanujan fellowship
(SR/S2/RJN-43/2009 for J. Haldar) from the Department of
Science and Technology, Government of India.
(8) (a) Colomer, A.; Pinazo, A.; Manresa, M. A.; Vinardell, M. P.;
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