Hemmpel, Wolf-Heiner. 1989. “Removal of Firmly Adhering Deposits and Stains from Incompletely Washed PES Starch Masses or Re-Precipitated Residues of PES Starch Masses on the Fabric”. Tekstil 38 (3): 155-55. https://tekstil.hist.hr/index.php/tekstil/article/view/333.