Publication
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A matrix method for the solution of a linear second order differential equation in two variables Tech Report
January 1955 -
January 1955 -
January 1956 -
January 1956 -
Brief aan Prof. dr. S.C. van Veen Tech Report
January 1956 -
January 1956 -
January 1956 -
Grieks-latijnse vierkanten Tech Report
January 1956