While at Göttingen, Struik made full use of the excellent library there to study the Renaissance mathematicians Ries, Rudolff, Apianus, Stifel and Stevin .
Habang sa Gottingen, Struik ginawa buong gamitin ng mahusay na aklatan doon sa pag-aaral ang muling mathematicians Ries, Rudolff, Apianus, Stifel at Stevin.