U. Fano
CLASSIFICATIONS AND PROPERTIES OF DOUBLY EXCITED STATES OF ATOMS
C. D. Lin
"EXCITED" ATOMS
EXCITED STATES OF A THREE-PARTICLE SYSTEM.
V.G. Tuskiya, G.A. Chilashvili
EXCITED STATES OF A PARTICLE IN A FIELD
Sergei Vladimirovich Tyablikov
VARIATION OF EXPONENTIAL DECAY OF EXCITED STATES.
Ketill Ingólfsson
MIXING WITH HIGHER EXCITED STATES