Solvolysis and aminolysis on peptidyl-Kaiser oxime resin assisted by `Ca POT. 2+´ and `Eu POT. 3+´: a mild procedure to prepare `alfa´-methyl and -ethyl esters of protected peptides - Moraes, C M; Bemquerer, M P; Miranda, Maria Terêsa Machini de (Journal of Peptide Research, 2000)