In 1929 Kalecki applied for work at the Institute of Research on Business Cycles and Prices ("Instytut Badania Koniunktur Gospodarczych i Cen") in Warsaw and obtained a job there because of his ability to use statistics. He stayed there for seven years. On 18 June 1930 he married Ada Szternfeld. At the Institute he met Ludwik Landau, whose knowledge of statistics influenced Kalecki's work. His first publications were of a practical character and were concerned with establishing relationships between macro-magnitudes. The first article that anticipated many subsequent contributions was published in 1932 in "Przegląd socjalistyczny" ('The Socialist Review') magazine, under the pseudonym Henryk Braun. The article dealt with the impact of wage cuts during an economic downturn.