https://www.arxiv.org/abs/nucl-th/0506031
Abstract page for arXiv paper nucl-th/0506031: Two pion mediated scalar isoscalar NN interaction in the nuclear medium
nuclthtwopionmediated
https://www.osti.gov/pages/biblio/1529660-isoscalar-mesons-exotic-states-light-front-holographic-qcd
The U.S. Department of Energy's Office of Scientific and Technical Information
light frontisoscalarmesonsexoticstates