Synthesis of Phenethyl-aza-ß-Lactam (1,2-Dimethyl4(R,S)-Phenethyl-[1,2]Diazetidin-3-One) - Ritmaleni, Ritmaleni; Faculty of Pharmacy, Gadjah Mada University, Yogyakarta Indonesia (Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia, 2005)