Collinge D B, Kragh K M, Mikkelsen J D, Nielsen K K, Rasmussen U, Vad K
Department of Plant Biology, Royal Veterinary and Agricultural University, Frederiksberg C, Copenhagen, Denmark.
Plant J. 1993 Jan;3(1):31-40. doi: 10.1046/j.1365-313x.1993.t01-1-00999.x.