1. Pressman D. Patent it yourself. Berkeley, CA: Nolo Press; 2006. p. 56. ISBN 1-4133-0516-4.
2. https://www.bitlaw.com/source/35usc/113.html
.
3. Chisum D. Volume 4A, Chapter 14. Priority by foreign filing, § 14.02 historical development. In: Chisum D, editor. Chisum on patents. Seattle: Matthew Bender LexisNexis; 2010.
4. http://patentattorneycionca.com/PatentInformation/DivisionalPatent
.
5. Harnack G. Mastering and managing the FDA maze: medical device overview. Milwaukee, American Society for Quality. .ISBN 9780873894555; 1999.