Astron. Astrophys. 327, 72-80 (1997)

Acknowledgements

We are grateful to G. Stirpe and E. Gianuzzo for providing their optical spectra of three NLS1. We also want to thank T. Boller for his help in the selection of the targets list. This work has been partially supported by Spanish CICYT grant PB-ESP95-0389-C02-02.

© European Southern Observatory (ESO) 1997

Online publication: April 8, 1998
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