Organic chemistry Z 0200 Asymmetric Synthesis of Phosphonic Analogues of β-Amino Acids -[20 refs.]. -(LAJCZYK, M. M.; DRABOWICZ, J.; LYZWA, P.; Enantiosel. Synth. Beta-Amino Acids (2nd Ed.) 2005, 261-276; Cent. Mol. Macromol. Stud., Pol. Acad. Sci., PL-01-224 Warszawa, Pol.; Eng.) -Lindner 31-275