Bibliometrics

Step 1: Define Bradford's Law. Bradford's Law is a bibliometric law formulated by Samuel C. Bradford. It describes the distribution of articles on a given subject across different journals.

Step 2: Explain the core concept. The law states that a small number of "core" journals will contain a large proportion of the articles on a subject. More articles will be found in a larger number of journals that are less focused on the topic, and the remaining articles will be scattered across a vast number of journals. This phenomenon is known as the scattering of articles.

Step 3: Relate to other laws. Bradford's Law specifically addresses how articles on a topic are scattered across a range of journals.

Step 1: Identify 'BibExcel'. BibExcel is a widely used free software tool designed for analyzing bibliographic data. It is particularly popular in the fields of bibliometrics and scientometrics for tasks like citation analysis.

Step 2: Identify the developer. The software was developed by Professor Olle Persson of Umeå University, Sweden.

Step 3: Differentiate from other figures. The other names are also prominent in bibliometrics (Eugen Garfield founded the Institute for Scientific Information and invented the Science Citation Index), but Olle Persson is the specific developer of BibExcel.