 
The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
@unpublished{Ercolani:ICALEPCS2015-TUK3K01,
  author       = {A. Ercolani},
  title        = {{E}uropean {S}pace {A}gency ({ESA}): {T}he {F}antastic {J}ourney of {R}osetta and its {C}ompanion {P}hilae},
  booktitle    = {Proc. of International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS'15),
                  Melbourne, Australia, 17-23 October 2015},
  language     = {english},
  intype       = {presented at the},
  series       = {International Conference on Accelerator and Large Experimental Physics Control Systems},
  number       = {15},
  venue        = {Melbourne, Australia},
  publisher    = {JACoW},
  address      = {Geneva, Switzerland},
  month        = {Dec.},
  year         = {2015},
  note         = {presented at ICALEPCS2015 in Melbourne, Australia, unpublished},
}