JANG, Doo; KIM, Joong-Gon. Direct Synthesis of Acyl Azides from Carboxylic Acids by the Combination of Trichloroacetonitrile, Triphenylphosphine and Sodium Azide. Synlett. S. 2072–2074. doi:10.1055/s-2008-1077979.
SCRIVEN, Eric F. V.; TURNBULL, Kenneth. Azides: their preparation and synthetic uses. Chemical Reviews. S. 297–368. doi:10.1021/cr00084a001.
GAGNON, Paul E.; BOIVIN, Paul A.; CRAIG, Hugh M. Synthesis of Amino Acids from Substituted Cyanoacetic Esters. Canadian Journal of Chemistry. S. 70–75. doi:10.1139/v51-009.
GAGNON, Paul E.; NADEAU, Guy; CÔTÉ, Raymond. Synthesis of α-Amino Acids from Ethyl Cyanoacetate. Canadian Journal of Chemistry. S. 592–597. doi:10.1139/v52-071.