Nestor, V. 2005.
Chitinozoans of the Margachitina margaritana Biozone and the Llandovery-Wenlock boundary in West Estonian drill cores.Proceedings of the Estonian Academy of Sciences. Geology54,
Nestor, V., Einasto, R., Loydell, D. K. 2002.
Chitinozoan biostratigraphy and lithological characteristics of the Lower and Upper Visby boundary beds in the Ireviken 3 section, Northwest Gotland.Proceedings of the Estonian Academy of Sciences. Geology51,
Nestor, H., Nestor, V. 2002.
Upper Llandovery to middle Wenlock (Silurian) lithostratigraphy and chitinozoan biostratigraphy in southwestern Estonia and northermost Latvia.Proceedings of the Estonian Academy of Sciences. Geology51,