Konar AD, Vass E, Hollósi M, Majer Z, Grüber G, Frese K, Sewald N (2013). “Conformational Properties of Secondary Amino Acids: Replacement of Pipecolic Acid by N-Methyl-L-alanine in Efrapeptin C”. 《Chemistry & Biodiversity》 10 (5): 942–951. doi:10.1002/cbdv.201300086. PMID23681735. S2CID37926505.
Konar AD, Vass E, Hollósi M, Majer Z, Grüber G, Frese K, Sewald N (2013). “Conformational Properties of Secondary Amino Acids: Replacement of Pipecolic Acid by N-Methyl-L-alanine in Efrapeptin C”. 《Chemistry & Biodiversity》 10 (5): 942–951. doi:10.1002/cbdv.201300086. PMID23681735. S2CID37926505.
Konar AD, Vass E, Hollósi M, Majer Z, Grüber G, Frese K, Sewald N (2013). “Conformational Properties of Secondary Amino Acids: Replacement of Pipecolic Acid by N-Methyl-L-alanine in Efrapeptin C”. 《Chemistry & Biodiversity》 10 (5): 942–951. doi:10.1002/cbdv.201300086. PMID23681735. S2CID37926505.