NOVEL SIDE REACTION ACCOMPANYING CYCLIZATION OF GLU(R1)-GLU(R2) DIPEPTIDES VIA LACTAMIZATION OF THE GLU(R1) RESIDUE СтатьяDeigin V., Ksenofontova O., Yatskin O., Kublitsky V., Shmygarev V., Dubinnyi M., Ivanov V., Abramovich R.Journal of Peptide Science. Том 24. 2018. e3074 с.