TY - CONF A1 - Tsonkova, Penka A1 - Quinkenstein, Ansgar A1 - Böhm, Christian A1 - Freese, Dirk A2 - Burkhard, B. A2 - Crossmann, N. A2 - Nedkov, S. T1 - Selection of indicators to assess ecosystem services provided by alley cropping system T2 - Book of abstracts of the 4th ESP Conference 2011 - Ecosystem Services: integrating Science and Practice; Workshop 1: Quantifying, mapping, and modeling of ecosystem services, held 4-7 October in Wageningen, Netherlands Y1 - 2013 UR - https://opus4.kobv.de/opus4-UBICO/frontdoor/index/index/docId/9260 UR - http://www.espconference.org/downloadattachment/79653/64887/Book%20of%20abstracts%20-%20Workshop%201.pdf ER -