Analysis of information sources in references of the Wikipedia article "Hendrika Johanna van Leeuwen" in Portuguese language version.
Shortly after the war it was very difficult for the TH [Technische Hogeschool] to get academic staff. Wages were low compared with those in industry and laboratory facilities were less. At that time, shortly after each other, three women were appointed lecturer: Hendrika van Leeuwen in 1947 in theoretical and applied physics; Antonia Korvezee in 1948 in physical chemistry; and Jentina Leene in 1949 in fibre technology. These three ladies were all from an older generation, trained with a Ph.D. well before the war, and unmarried.
Shortly after the war it was very difficult for the TH [Technische Hogeschool] to get academic staff. Wages were low compared with those in industry and laboratory facilities were less. At that time, shortly after each other, three women were appointed lecturer: Hendrika van Leeuwen in 1947 in theoretical and applied physics; Antonia Korvezee in 1948 in physical chemistry; and Jentina Leene in 1949 in fibre technology. These three ladies were all from an older generation, trained with a Ph.D. well before the war, and unmarried.