J. China Assoc. Instr. Anal. 8, 6-14 (1989). A review with 15 references of some recent developments in instrumental TLC techniques aiming at increasing the separation efficiency based on existing layers, such as gradient elution in normal phase, multidimensional separations by coupling gradient-elution reverse-phase HPLC with AMD normal phase gradient elution. Description of applications to phospholipids in emulsifiers, sulfonamides in feed, plastic prepolymerizate and pesticides in drinking water.

J. Planar Chromatogr. 3, 401-406 (1990). Presentation of a new device for forced flow development based centrifugal acceleration. The device enables a suitable mobile phase velocity to be used in the circular development mode of classical preparative planar chromatography. A solvent reservoir made of steel and a rubber sealing ring are placed on the layer and fixed by a magnet located below the chromatoplate. To start the separation, adsorbent is scratched from the center of the plate and the recess so produced filled with mobile phase. The device can be used in different configurations.

J. Chromatogr. Libr. 51A, A109-A150 (1992). A review with 137 references on planar chromatography with references on planar chromatography with emphasis on various chamber types and development modes including forced flow planar chromatographic methods.

J. Planar Chromatogr. 7, 329-333 (1994). Discussion of factors causing problems of OPLC, including preparation of plates, selection of mobile phase, inlet pressure, elimination of "multi-front effect", etc.

Dünnschicht-Chromatographie InCom Sonderband 1996, 166-185. Description of the four most frequently used modes for multidimensional planar chromatography: 1. Multiple development in one, two, or three dimensions on the same monolayer stationary phase with different mobile phases; 2. two-dimensional development on the same bilayer stationary phase either with the same mobile phase or with mobile phases of different compositions; 3. different stationary phases connected in series and developed with a mobile phase of constant composition; 4. a combination of at least two of the before mentioned modes.

J. Planar Chromatogr. 11, 357-360 (1998). The amount of cationic ion-pairing reagent - cetyltrimethylammonium bromide (CTMA) - adsorbed on layers such as silica gel and on RP-18 has been studied by continuous OPLC. The effects of 'chemical' (concentration of the ion-pairing reagent in the impregnation solution, nature and concentration of the organic solvents in the mobile phase) and 'instrumental' (external pressure and flow-rate of the mobile phase) conditions were studied. 'Instrumental' conditions had no effect on the quantity of CTMA adsorbed. The distribution of CTMA was homogenous both on silica gel and on reversed-phase layers when methanol concentrations were 50% or higher and the concentration of CTMA in the impregnating solution was 0.01 M or higher for RP-18 and 0.025 M or higher for silica gel layers.

J. Planar Chromatogr. 15, 377-379 (2002). TLC of dyes (methyl red, naphthol red, methyl yellow, azobenzene) on silica gel, open layers and layers covered with a polymeric membrane, with and without mobile phase pressure resulting in an improvement of mixture separation.

Proc. Intern. Symp. on Planar Separations Plan. Chrom. 41-60 (2003). Summary of the progress in forced-flow planar separations (FFPS) and demonstration of the importance of the different forced-flow planar chromatographic (FFPC) techniques like rotation planar chromatography (RPC), overpressured layer chromatography (OPLC), and electro-planar chromatography (EPC) as well as rotation planar extraction (RPE). Special attention was paid to a novel analytical forced-flow high-performance (HP) thin-layer chromatographic (TLC) method, in which continuous development and evaporation of the mobile phase from the end of the chromatographic plate ensure forced-flow development.