1. Double Beta Decay
2. A. Morales, Universidad de Zaragoza, preprint LFNAE-949004, 1994.
3. Nuclear structure effects in double-beta decay
4. Double beta decay: Comparison of theory to experiment
5. K. Muto, in: H. Ejiri, T. Kishimoto, T. Sato (Eds.), Weak and electromagnetic interactions in nuclei, World Scientific, Singapore, 1995, p. 259.