TY  - RPRT
TI  - Excited-state vertices for type-I superstrings.
AU  - L Clavelli
AU  - B Harms
PY  - 1988
DO  - 10.1103/physrevd.37.3622
UR  - https://pubmed.ncbi.nlm.nih.gov/9958654/
ID  - 9958654
ER  -