RT Journal Article SR Electronic T1 Calculating Light Levels for Savanna and Woodland Restorations JF Ecological Restoration FD University of Wisconsin Press SP 161 OP 164 DO 10.3368/er.19.3.161 VO 19 IS 3 A1 Swenson, Steve A1 Beilfuss, Rich YR 2001 UL http://er.uwpress.org/content/19/3/161.abstract AB