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- [33] CONFORMATIONAL CHARACTERIZATION OF SOLID POLYPEPTIDES BY C-13 NMR RECORDED BY THE CROSS POLARIZATION MAGIC ANGLE SPINNING METHOD - CONFORMATION-DEPENDENT C-13 CHEMICAL-SHIFTS OF OLIGO(GAMMA-BENZYL L-GLUTAMATES) AND POLY(GAMMA-BENZYL L-GLUTAMATES) AND SEQUENTIAL COPOLYMERS OF GAMMA-BENZYL AND GAMMA-METHYL L-GLUTAMATES AND QUALITATIVE EVALUATION OF SIDE-CHAIN ORIENTATIONLU MACROMOLECULES, 1984, 17 (08) : 1472 - 1479