http://antoine.frostburg.edu/chem/senese/101/index.shtml
Web page where I got idea and that was basis for this thesis. That is where everything began.

http://www.chemistry.ohio-state.edu/~grandinetti/teaching/Chem121/lectures/sigfigs/sigfigs.html
Excellent example of server oriented (CGI) quiz for measurement uncertainty. It could be great start for increasing interactivity of web page.

http://physics.nist.gov/cuu/Uncertainty/index.html
Useful texts about measurement uncertainty with few examples. On this page you could find definitions of physics constants and measurement units.

http://www.angelfire.com/oh/cmulliss/
Here is explained problem of simplified rounding of result of algebraic operations.

http://www.european-accreditation.org/
This page has many interesting documents about measurement, measurement uncertainty, confirmations and collaboration in measurements.

http://141.63.4.16/index.html
EUROLAB - international association for measurement, examination and analytic laboratories.

http://www.isgmax.com/unc_screens/unc_degrees_freedom.htm
Statistical calculator for calculating degrees of freedom of type B uncertainty. It has approach that is not generally accepted. Usually is presumed that number of degrees of freedom of type B uncertainty is infinite.

http://carnegieinstitution.org/first_light_case/horn/lessons/measurement.html
List of links from different regions about measurements, analysis and uncertainty.

http://www.hmd.hr/croatian/index.htm
Web page of Croatian Metrology Society, non-government, non-profit organization. Object of society is gathering persons that are in metrology business for advancing metrology branch, exchange of experience and collaboration. This page also has useful links.

http://www.dznm.hr/
State office for standardization and metrology. They define the scope and activities within its competence, which primarily include the regulation in the field of standardization, metrology, testing, certification, accreditation as well as the control of precious metal articles.

http://www.iso.ch/iso/en/ISOOnline.frontpage
(International Organization for Standardization) - network of national standards of 146 countries. They coordinate development of standards, products and services.

http://www.ansi.org/
(American National Standard Institute) - is a private, non-profit organization that administers and coordinates the U.S. voluntary standardization and conformity assessment system. The Institute's mission is to enhance standards, products and services.

http://www.cenelec.org/
(European Committee for Electrotechnical Standardization) - is non-profit European organization for coordinating standards on European market.

http://standards.ieee.org/
Organization that coordinates and administers development and improvement of industrial standards.