Acknowledgment

Co-Editor-in-Chief Stan Lipovetsky thanks the referees contributed in reviewing the papers in 2019:

Peter Adamic, Laurentian University, Canada

Raghunath Arnab, University of Botswana, Gaborone, Botswana

Slava Brodsky, NJ, USA

Wenyaw Chan, The University of Texas at Houston, USA

Paul Garthwaite, The Open University, Milton Keynes, UK

Hui Gong, Valparaiso University, IN, USA

Yulei He, Centers for Disease Control and Prevention, Hyattsville, MD, USA

Sunil Kumar, Department of Statistics, University of Jammu, India

Vladimir Ladyzhets, University of Connecticut, Stamford, USA

R.R. Linhares, Federal University of Uberlândia, Brazil

Ilya Lipkovich, Quintiles Innovation, Morrisville, NC, USA

Igor Mandel, Telmar Inc., New York NY, USA

Nikita Moiseev, Plekhanov University of Economics, Moscow, Russia

Edwin M.M. Ortega, San Paolo University, Brazil

Sergio M. Puertas, Spain

Henry Penikas, Higher School of Economics, Moscow, Russia

Gyan Prakash, M. L. N. Medical College, Allahabad, India

R.P. de Oliveira, University of São Paulo, Brazil

Hansapani Rodrigo, The University of Texas Rio Grande Valley, USA

Arkady Shemyakin, University of St. Thomas, St. Paul, MN, USA

G.O. Silva, Departamento de Estatística, IME-UFBA, Brazil

Sarjinder Singh, Dept. of Mathematics, Texas A&M University-Kingsville, USA

A.K.P.C. Swain, Orissa, India

Yageen Thomas, University of Kerala, India

Med Ram Verma, India

Joe Walsh, Charles Darwin University, Darwin, Australia

Boris Zaslavsky, FDA, Rockville, MD, USA

Anqing Zhang, University of Missouri-Columbia, USA