@article{8ae51eb3a66f483eabdb358d7752d619,
title = "Observation of Upsilon(4S) decays to pi(+)pi(-)Upsilon(1S) and pi(+)pi(-)Upsilon(2S)",
author = "B. Aubert and J.Y. Chen and K. Peters and L.L. Zhang and S. Chen and W. Wang and X.H. Li and M.A. Baak and H.J. Bulten and G. Raven and H. Snoek and P. David and H. Schroder and \{de Groot\}, N. and \{van Bakel\}, N. and Z. Yu",
note = "Observation of Upsilon(4S) decays to pi(+)pi(-)Upsilon(1S) and pi(+)pi(-)Upsilon(2S)",
year = "2006",
doi = "10.1103/PhysRevLett.96.232001",
language = "English",
volume = "96",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "23",
}