Sommer, Julius (1871-1943). Preface
Pohlhausen, Ernst (1890-1964) Gdańsk University of Technology
Zirkwitz, Viktor
Roessler, Gustaw (1869-1928)
Schwartz, Hubertus (1883-1966)
Skusa, August Wilhelm (1791-1856)
Bernoulli, Johann (1744-1807)
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