@misc{AbdurahmanMohnColdeweyetal.2008,
  author    = {Abdurahman, M. A. and Mohn, R. and Coldewey, W. G. and Awulachew, S. B. and Werner, J. and Kruse, B.},
  title     = {Calibration of Run-off Coefficients Considering Different Rainfall and Run-off Events and Seasonal Flows (Case Study for Laelay Wukro and GumSelassa Watersheds); Nile Development Forum, Cairo, Nov. 2008},
  year      = {2008},
  language  = {en}
}
@misc{AbdurahmanMohnColdeweyetal.2008,
  author    = {Abdurahman, M. A. and Mohn, R. and Coldewey, W. G. and Awulachew, S. B. and Werner, J. and Kruse, B.},
  title     = {Use of Adaptable Empirical Equations for Potential Evapotranspiration Estimation and Soil Moisture Balance Approaches for Estimating Actual Evapotranspiration; Nile Development Forum, Cairo, Nov. 2008},
  year      = {2008},
  language  = {en}
}
@article{HufnagelKruse2008,
  author    = {Hufnagel, W. and Kruse, A.},
  title     = {NKF in NRW - Ermittlung des Sonderpostens Beitr{\"a}ge am Beispiel der Gemeinde Hille},
  series = {Der Gemeindehaushalt},
  journal   = {Der Gemeindehaushalt},
  number    = {7},
  pages     = {153 -- 157},
  year      = {2008},
  language  = {de}
}
@incollection{MohnAbdurahmanGardemannetal.2012,
  author    = {Mohn, R. and Abdurahman, M. and Gardemann, A. and Mathys, J. and Nedaw, W. and Kruse, D. and Herbst, B.},
  title     = {Subsurface Micro-Reservoirs for Rural Water Supply in the Ethiopian Highlands},
  series = {Landscape and Sustainable Development, University of Salzburg (eds. Weingartner et al.)},
  booktitle = {Landscape and Sustainable Development, University of Salzburg (eds. Weingartner et al.)},
  edition   = {4},
  address   = {Salzburg},
  pages     = {85 -- 100},
  year      = {2012},
  language  = {en}
}
@techreport{NedawMathysGardemannetal.2012,
  author    = {Nedaw, Dessie and Mathys, Werner and Gardemann, Joachim and Abdurahman, Mohammed A. and Mohn, Rainer and Kruse, Burkhardt and Herbst, Christian},
  title     = {Subsurface Micro-Reservoirs for Rural Water Supply in the Ethiopian Highlands - TAWI Tigray and Afar Water Initiative, Ethiopia},
  series = {Landscape and sustainable Development Vol. 4},
  journal   = {Landscape and sustainable Development Vol. 4},
  publisher = {FH M{\"u}nster},
  doi       = {10.25974/fhms-553},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-5535},
  year      = {2012},
  abstract  = {The Tigray and Afar Water Initiative (TAWI) is a collaboration between the Mekelle University (Ethiopia), the Muenster University of Applied Sciences (Germany) and the Westfalian Wilhelms-University Muenster (Germany). This special initiative is concerned with the rural water supply for the particularly water-scarce regional states of Tigray and Afar in the semi-arid north of Ethiopia. This paper describes a pilot project near the village of Koraro, Hawzen county in the Tigray region and deals with river reaches or creeks which carry water for short periods and only after the longer of two rainy seasons. When these waters run dry, water is still often to be found under the dry beds and is used casually by local people for agricultural purposes. An impermeable wall constructed as a subsurface dam to retain water in the ensuing subsurface micro-reservoir under the bed of such rivers could enable this usage to be intensified and hence enhance the water supply of small local user-groups, while at the same time positively influencing the landscape water balance. Here, the word micro refers to the fact that only the pores of the granular soil of an alluvial river bed are used to store water. Furthermore, storing water underground also avoids the danger of increasing the incidence of diseases such as malaria, a consequence of open water ponds.},
  language  = {en}
}