1. Geotropism and phototropism in the absence of free oxygen;Ameijden;Rec. Trav. bot. Neerl.,1917
2. Untersuchungen über den Phototropismus;Arisz;Rec. Trav. Bot. Neerl.,1915
3. The effect of pigment on the phototropic response;Atkins;Ann. Bot.,1936
4. Über den Wanderungsweg fluoreszierender Farbstoffe in den Siebröhren;Bauer;Planta,1949
5. Histological Response to Growth-Regulating Substances;Beal,1951