While teaching at the Faculty of Technology and Metallurgy, Professor Šaper published more than 150 scientific and professional papers. He was the author or co-author of five books on analytical chemistry and automatic regulation of chemical processes. He spent 1957 studying in Amsterdam, where he prepared his doctoral dissertation. In 1967, he agreed to start the Chemistry Institute in Khartoum, Sudan, as a UN expert. However, despite the desire of the government of Sudan and the United Nations that he stay longer, after a year Šaper returned to his home country to fulfil his role as president of the Basketball Federation of Yugoslavia.