Aušra Augustinavičiūtė usually used names like "sensory-logical introvert" (SLI) to refer to the types. In SLI the leading function is introverted sensation and the creative function is extraverted logic. She also introduced the practice of referring to types by the name of a famous person of the type (although types of these persons are not universally agreed upon, with the old name "Napoleon" for the SEE being replaced by "Caesar" after being deemed an inaccurate type assignment). For example, she called the SLI "Gabin" and the SEI "Dumas". Also sometimes names such as "Craftsman" or "Mediator" are used to express the social role of the type—a convention introduced by socionist Viktor Gulenko in 1995. Given the formal similarities present between Socionics and the Myers–Briggs Type Indicator (MBTI) abbreviations frequently used in English, some prefer to distinguish socionic type names from Myers–Briggs' names by writing the last letter (J or P) in lower case (for example, ENTp, ESFj)—a practice introduced by Sergei Ganin. This is because the relationship between socionics and Myers–Briggs and Keirseyan types is controversial.