- Magni, P.; Rajagopal, S.; van der Velde, G.; Fenzi, G.A.; Kassenberg, J.; Vizzini, S.; Mazzola, A.; Giordani, G. (2008). Sediment features, macrozoobenthic assemblages and trophic relationships (d13C and d15N analysis) following a dystrophic event with anoxia and sulphide development in the Santa Giusta lagoon (western Sardinia, Italy). Mar. Pollut. Bull. 57(1-5): 125-136. http://dx.doi.org/10.1016/j.marpolbul.2007.10.015, meer
- Van Riel, M.C.; van der Velde, G.; Rajagopal, S.; Marguillier, S.; Dehairs, F.A.; Bij de Vaate, A. (2006). Trophic relationships in the Rhine food web during invasion and after establishment of the Ponto-Caspian invader Dikerogammarus villosus. Hydrobiologia 565(1): 39-58. dx.doi.org/10.1007/s10750-005-1904-8, meer
- Sluys, R.; Faubel, A.; Rajagopal, S.; van der Velde, G. (2005). A new and alien species of "oyster leech" (Platyhelminthes, Polycladida,. Stylochidae) from the brackish North Sea Canal, The Netherlands. Helgol. Mar. Res. 59(4): 310-314. http://dx.doi.org/10.1007/s10152-005-0006-3, meer
- Marguillier, S.; van der Velde, G.; Dehairs, F.A.; Hemminga, M.A.; Rajagopal, S. (1997). Trophic relationships in an interlinked mangrove-seagrass ecosystem as traced by d 13C and d 15N. Mar. Ecol. Prog. Ser. 151: 115-121, meer
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- Bij de Vaate, A.; Rajagopal, S.; van der Velde, G. (2010). The zebra mussel in Europe: summary and synthesis, in: van der Velde, G. et al. (Ed.) The Zebra mussel in Europe. pp. 415-421, meer
- Bruijs, M.C.M.; Jenner, H.A.; Rajagopal, S. (2010). Industrial cooling water fouling by Dreissenidae, in: van der Velde, G. et al. (Ed.) The Zebra mussel in Europe. pp. 353-362, meer
- Rajagopal, S.; van der Velde, G.; Jenner, H.A. (2010). Turning the heat on Dreissena polymorpha: temperature as a control option, in: van der Velde, G. et al. (Ed.) The Zebra mussel in Europe. pp. 363-369, meer
- Rajagopal, S.; van der Velde, G.; Jenner, H.A. (2010). Chlorination for Dreissena polymorpha control: old war-horse for the new pest?, in: van der Velde, G. et al. (Ed.) The Zebra mussel in Europe. pp. 383-392, meer
- van der Velde, G.; Rajagopal, S.; Bij de Vaate, A. (2010). From zebra mussels to quagga mussels: an introduction to the Dreissenidae, in: van der Velde, G. et al. (Ed.) The Zebra mussel in Europe. pp. 1-10, meer
- van der Velde, G.; Nagelkerken, I.; Rajagopal, S.; Bij de Vaate, A. (2002). Invasions by alien species in inland freshwater bodies in western Europe: the Rhine Delta, in: Leppäkoski, E. et al. (Ed.) Invasive aquatic species of Europe: distribution, impacts and management. pp. 360-372, meer
- van der Velde, G.; Rajagopal, S.; Kelleher, B.; Muskó, I.; Bij de Vaate, A. (2000). Ecological impact of crustacean invaders: general considerations and examples from the Rhine River, in: von Vaupel Klein, J. Carel et al. (Ed.) The Biodiversity Crisis and Crustacea: Proceedings of the Fourth International Crustacean Congress, Amsterdam, Netherlands, 20-24 July 1998, volume 2. Crustacean Issues, 12: pp. 3-33, meer
- Marguiller, S.; Dehairs, F.A.; van der Velde, G.; Kelleher, B.; Rajagopal, S. (1998). Initial results on the trophic relationships based on Corophium curvispinum in the Rhine traced by stable isotopes, in: [s.d.] pp. 171-177, meer
 Marguillier, S.; Dehairs, F.; van der Velde, G.; Kelleher, B.; Rajagopal, S. (1998). Initial results on the trophic relationships based on Corophium curvispinum in the Rhine traced by stable isotopes, in: Nienhuis, P.H. et al. (Ed.) New concepts for sustainable management of river basins. pp. 171-177, meer- van der Velde, G.; Rajagopal, S.; Van Den Brink, F.W.B.; Kelleher, B.; Paffen, B.G.P.; Kempers, A.J.; Bij de Vaate, A. (1998). Ecological impact of an exotic amphipod invasion in the river Rhine, in: Nienhuis, P.H. et al. (Ed.) New concepts for sustainable management of river basins. pp. 159-169, meer
- van der Velde, G.; Van der Gaag, R.; Rajagopal, S.; Jenner, H.A. (1998). Where exotic mussels Dreissena polymorpha and Mytilopsis leucophaeata meet in the brackish Noordzeekanaal, the Netherlands, in: Abstracts from the 8th International Zebra Mussel and other Nuisance Species Conference, Sacramento California. , meer
- Venugopalan, V.P.; Rajagopal, S.; Sasikumar, N.; Nair, K.V. (1992). Marine biology of a seawater tunnel on the east coast of India, in: Desai, B.N. (Ed.) Oceanography of the Indian Ocean. pp. 253-259, meer
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- Van Der Gaag, M.; Van der Velde , G.; Wijnhoven, S.; Rajagopal, S. (2014). Temperature dependent larval occurrence and spat settlement of the invasive brackish water bivalve Mytilopsis leucophaeta (Conrad, 1831) (Dreissenidae)-. Monitor Taskforce Publication Series, 2013-20. NIOZ: Yerseke. 30-34 pp., meer
- Van der Velde, G.; Dehairs, F.; Marguillier, S.; Mwatha, G. K.; Op 't Veld, R. L. J. M.; Rajagopal, S.; Van Avesaath, P. H. [s.d.]. Structural and stable isotope differences in the fish communities of mangrove creeks, seagrass meadows and sand flats in Gazi Bay (Kenya): report EG project. [S.n.]: Nijmegen. 132-156 pp., meer
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