• Inversion of data represented by linear algebraic or integral equations, such as general analysis of multi-exponential decay (Laplace inversion) or estimating secondary structure from circular dichroism;
• Most aspects of the problem can be easily modified in small user-oriented modules; too many applications to list here have been implemented by users;
• Running in hundreds of laboratories with a wide variety of computers.

The methods are described in:

• S.W. Provencher: Inverse problems in polymer characterization: Direct analysis of polydispersity with photon correlation spectroscopy. Makromol. Chem. 180, 201 (1979).
• S.W. Provencher: A constrained regularization method for inverting data represented by linear algebraic or integral equations. Comput. Phys. Commun. 27, 213 (1982).
• S.W. Provencher: CONTIN: A general purpose constrained regularization program for inverting noisy linear algebraic and integral equations. Comput. Phys. Commun. 27, 229 (1982).

Downloading (for all applications except circular dichroism and CONTIN-multiq):

1. README.txt (1.3KB): Short guide for the installation and test run; print this first;
2. contin-manual1.pdf (4292 kB);
3. contin-manual2.pdf (1960 kB);
4. cpc1.pdf (1009 kB);
5. cpc2.pdf (640 kB);
6. contin.for ( 83KB): (zipped with gzip) Fortran source code (not needed if you can use one of the two executables listed below);
7. contin.in (754 B): Test data.