1. Khanna SC, Speiser P (1969) Epoxy resin beads as a pharmaceutical dosage form I: methods of preparation. J Pharm 58:1114–1117
2. Speiser P, Khanna SC (1970) Perlpolymerisate, eine neue perorale Darreichungsform und ihre Beeinflussung durch Arzneistoffe. Prapar Pharm 6:1–4
3. Hasan S (2015) A review on nanoparticles : their synthesis and types biosynthesis mechanism. Res J Recent Sci 4:9–11
4. Korbekandi H, Iravani S (2012) In: Hashim AA (ed) Silver nanoparticles, the delivery of nanoparticles; ISBN: 978-953-51-0615-9.
5. Machado S, Pacheco JG, Nouws HPA, Albergaria JT, Delerue-Matos C (2015) Characterization of green zero-valent iron nanoparticles produced with tree leaf extracts. Sci Total Environ 533:76–81