EXTENSION OF THE CONVENTIONAL AND PSEUDOPOTENTIAL FESHBACH METHODS TO THE STUDY OF "TWO ACTIVE ELECTRONS + CORE" RESONANCE STATES. APPLICATION TO C2+ (1s23l3l' ) and Ne6+ (1s23l3l') SYSTEMS
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J. Phys. Colloques, 50 C1 (1989) C1-99-C1-103
DOI: 10.1051/jphyscol:1989110