béryllium
1969 / Lithium and Beryllium in Stars / George Wallerstein ; Peter S. Conti / Annual Review of Astronomy and Astrophysics 7 (1969) p. 99 [doi]
2000 / Lithium–beryllium–boron: origin and evolution / Elisabeth Vangioni-Flam ; Michel Cassé ; Jean Audouze / Physics Reports 333 (2000) p. 365 [doi]