Živković, A. (18 July 2019). Bedside-measurement of serum cholinesterase activity predicts patient morbidity and length of the intensive care unit stay following major traumatic injury. Scientific reports, 9, . doi:10.1038/s41598-019-46995-y

"Bedside-measurement of serum cholinesterase activity predicts patient morbidity and length of the intensive care unit stay following major traumatic injury / Aleksandar R. Zivkovic, Karsten Schmidt, Thomas Stein, Matthias Münzberg, Thorsten Brenner, Markus A. Weigand, Stefan Kleinschmidt & Stefan Hofer" Scientific Reports .

Živković, Aleksandar. "Bedside-measurement of Serum Cholinesterase Activity Predicts Patient Morbidity and Length of the Intensive Care Unit Stay Following Major Traumatic Injury." Scientific Reports 9 (18 July 2019).