The mechanism of stomata.

[21] Schwendener S, 1881, MONATSBER PREUSS AKA, V46, P833

[22] SCHWENDENER S, 1889, SITZBER BERL AKAD WI, V1, P65

[23] SOLEREDER H, 1889, SYSTEMATISCHE ANATOM, P193

[24] Stahl E., 1897, BOT Z, V55, P71

[25] Stahl E., 1894, BOT ZTG, V52, P117

[26] Strasburger E., 1866, JB WISS BOT, V5, P297

[27] STRASBURGER E, 1873, UEBER AZOLLA, P35

[28] VONMOHL H, 1856, BOT Z, V14, P697

[29] WEISS A, JAHRB WISS BOT, V4, P196

[30] WESTERMAIER M, 1889, SPALTOFFINUNGEN NEBE, P63

[21] Schwendener S, 1881, MONATSBER PREUSS AKA, V46, P833

[22] SCHWENDENER S, 1889, SITZBER BERL AKAD WI, V1, P65

[23] SOLEREDER H, 1889, SYSTEMATISCHE ANATOM, P193

[24] Stahl E., 1897, BOT Z, V55, P71

[25] Stahl E., 1894, BOT ZTG, V52, P117

[26] Strasburger E., 1866, JB WISS BOT, V5, P297

[27] STRASBURGER E, 1873, UEBER AZOLLA, P35

[28] VONMOHL H, 1856, BOT Z, V14, P697

[29] WEISS A, JAHRB WISS BOT, V4, P196

[30] WESTERMAIER M, 1889, SPALTOFFINUNGEN NEBE, P63