Dr. Sparrow is one on my favorite Criminal Justice authors.

This paper is an edited version of the Jerry Lee Lecture delivered at the Stockholm Criminology Symposium in 2018, the year in which Professor Herman Goldstein was awarded the Stockholm Prize in Criminology in recognition of his contribution to public safety through the development of problem-oriented policing. This paper examines the significance of a problem-oriented approach and seeks to establish the right balance among, and appropriate role for, a broad range of diverse contributions that scholars and analysts can make to support effective problem-solving. It explores the distinctive contributions of experimental criminology and program evaluation to problem-oriented work, and contrasts the inquiry techniques typically employed by social scientists and by natural scientists. The goal of this paper is to usefully “round out” the role that scholars are prepared to play in advancing effective problem-solving practice.
— Read on crimesciencejournal.springeropen.com/articles/10.1186/s40163-018-0088-2

Dr.  Goldstein is one of my favorite Criminal Justice Authors.

This paper is an edited version of the speech given upon being awarded the 2018 Stockholm Prize in Criminology. After a brief introduction, the paper describes the concept of problem-oriented policing (POP), first proposed in 1979. It goes on to assess the extent to which the police have adopted POP, and its current status. POP is, in the immediate sense, aimed at a reduction in the incidence or severity of the problem on which attention is focused, and, in the broader sense, at improving the fundamentals of policing in a democratic society.
— Read on crimesciencejournal.springeropen.com/articles/10.1186/s40163-018-0087-3