TY - BOOK ID - 145882149 TI - Many-electron systems : properties and interactions AU - Fraga, Serafin AU - MALLI, Gulzari PY - 1968 PB - Philadelphia, PA : W.B. Saunders, DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:145882149 AB - ER -