. . "K.F" . "Karl Friedrich" . . . . . "Schaller"@en . . "K.F Schaller" . "F."@en . "Friedrich" . "Karl" . "K. F. Schaller"@en . . "Karl-Friedrich Schaller" . "Karl Friedrich Schaller" . "Karl Friedrich Schaller"@en . "Karl F. Schaller" . . "K."@en . "Karl-Friedrich" .