Bortkiewicz was one of the main representatives of the "Continental direction" in mathematical statistics and its application to statistics, but he left no monographs, and the German scientist were only marginally interested in his works.
Bortkiewicz ay isa sa mga pangunahing kinatawan ng "Continental direksyon" sa matematika at istatistika ng kanyang aplikasyon sa mga istatistika, ngunit siya kaliwa walang monographs, at ang German siyentipiko ay lamang marginally interesado sa kanyang mga gawa.