Blichfeldt wrote papers on the geometry of numbers and he has an important book Finite Collineation Groups. He co-authored Theory and Application of Finite Groups with G A Miller and Dickson .
Blichfeldt wrote papeles sa geometry ng mga numero at siya ay isang mahalagang libro wakas Collineation Groups. He co-authored teorya at paglalapat ng wakas Groups sa GA Miller at Dickson.