Students sleep while the professor is hard at workEstonian Academy of Sciences yearbook 2019 : words and images. Facts and figures = Annales Academiae Scientiarum Estonicae2020 / p. 80 : ill https://www.ester.ee/record=b1218154*est

Yellow submarineEstonian Academy of Sciences yearbook 2019 : words and images. Facts and figures = Annales Academiae Scientiarum Estonicae2020 / p. 81 : ill https://www.ester.ee/record=b1218154*est