1. Density dependence of the single-particle potential in nuclear matter
2. A.K. Kerman and L.D. Miller, Field theory methods for finite nuclear systems and the possibility of density isomerism, MIT-CTP PUB 449, unpublished.
3. J. Boguta, Remarks of density isomers, Argonne National Laboratory report, unpublished.
4. Structural stability and morphogenesis;Thom,1975
5. Broken symmetries, massless particles and gauge fields