My five recent books in philosophy (published in Bulgarian Language) bear the titles: "Knowledge, Science, Pseudo-science" (2007), "Philosophy of Time" (2008), "Theories of Contemporary Natural Philosophy" (2008), "About Science and Its Applicability" (2010), "About Universe's Riddles and Other Meditations in Dialogues" (2012). I published also in English the book "Kant's Conceptions of Space and Time and Contemporary Science". Minkowski Institute Press, Montreal, 2015.