Ellipsometry measurements of glass transition breadth in bulk films of random, block, and gradient copolymersM. M. Mok, J. Kim, S. R. Marrou and J. M. TorkelsonEur. Phys. J. E, 31 3 (2010) 239-252DOI: https://doi.org/10.1140/epje/i2010-10569-3