@article{Ogata:2010A6, author = "Ogata, Risa", title = "{Search for X(214) in $K^0_L\rightarrow \pi^0 \pi^0 X (X\rightarrow \mu^+ \mu^-)$ using Back-Anti counter at the E391a experiment}", doi = "10.22323/1.083.0014", journal = "PoS", year = 2010, volume = "KAON09", pages = "014" }