@article{LeupoldTeuchnerEhlertetal.2006,
  author    = {Leupold, Dieter and Teuchner, Klaus and Ehlert, J{\"u}rgen and Irrgang, Klaus-Dieter and Renger, Gernot and Lokstein, Heiko},
  title     = {Stepwise two-photon excited fluorescence from higher excited states of chlorophylls in photosynthetic antenna complexes},
  issn      = {0021-9258},
  doi       = {10.1074/jbc.M600080200},
  year      = {2006},
  language  = {en}
}
@article{LoksteinHoextermannLeupoldetal.2009,
  author    = {Lokstein, Heiko and Hoextermann, Ekkehard and Leupold, Dieter and Garab, Gyoezoe and Renger, Gernot},
  title     = {A tribute : Professor Dr. Paul Hoffmann (March 28, 1931-July 10, 2008), a scientist with a great collaborative spirit},
  issn      = {0166-8595},
  doi       = {10.1007/s11120-009-9414-6},
  year      = {2009},
  language  = {en}
}