Analyst 112, 1171- 1172 (1987). Description of a simple device for applications of samples to TLC plates with the reproducibility comparable to that of standard methods and suitability for quantification. Several examples were given.

Proc. Intern. Symp. on Planar Separations, Planar Chromatography 2001, pp. 127-136. Examination of the influence of the application method of samples on the migration of their components, dimension of spots on the developed chromatogram, resolution and the number of HETP. TLC of a standard mixture of dyes on silica gel with toluene. A new method of application is the use of a filter paper: A given volume of solute is applied on the filter paper - in the form of a triangle - using a calibrated micropipette, then by means of the mobile phase the solute is transferred from the filter to the sorbent layer.

J. Planar Chromatogr. 22, 313-319 (2009). Presentation of two different methods of three-dimensional TLC using plates with open and sealed (closed) adsorption layers. In the suggested method the components of the test dye mixture initially migrate in the first direction, then in the second direction (different from the first) and in the third direction (different from first and second). TLC of dye mixture 1 (crystal violet, xylen cyanol, neutral blue, bromothymol dark blue, methanyl yellow, acridine orange, indophenol, ariabel red, Sudan blue II, Sudan IV, dimethylaminoazobenzene) with ethanol - acetic acid 10:1 (1D), acetone (2D), and toluene (3D) and of mixture 2 (dark violet, bright orange, yellow, dark red, violet) on silica gel with tetrahydrofurane - benzene 9:1 (1D), dichloromethane - benzene 3:1 (2D), and toluene (3D).

J. Planar Chromatogr. 27, 299-314 (2014). 2D-HPTLC of 115 toxicological relevant drugs in serum or blood on silica gel with different solvent mixtures. Quantitative determination by absorbance measurement at different wavelenghts. The 2D-HPTLC method provided significant qualitative and quantitative improvements related to separation efficiency, comparable with HPLC-DAD, GC-MS and LC-MS.

J. Chromatogr. A 1499, 183-189 (2017). Description of the 2-D separation technique orthogonal pressurized planar electrochromatography (OPPEC), in which two simultaneous and orthogonal processes of electrophoresis and chromatography are involved in the separation mechanism. In the case of preparative separation of substances characterized by different electrophoretic mobility, such a separation system can be constantly fed with the sample solution and the separated components can be constantly collected at its outlet. Discussion of the capabilities of OPPEC for preparative separation of substances characterized by the same electrophoretic mobility. In the proposed solution, the separation system is periodically fed with the sample solution and separated components are collected alternately at its outlet. The new approach might be advantageous to column chromatography with regard to the separation of complex mixtures.

Anal. Chem. 56, 293-297 (1984). Computer assisted optimization of chromatography conditions for complex mixtures. Parallel development with different systems, evaluated by the computer to define a binary solvent mixture. Method was validated by comparing the two-dimensional separation of 13 steroids with the computer simulated results (good agreement).

Analysis of ink from ball point pens. J. Chromatogr. 355, 363-366 (1986). Description of a device and the technique of on-line extraction carried out in equilibrium sandwich chambers for TLC, exemplified by the analysis of organic inks on silica with acetone - methanol 1:1..

J. Chomatogr. 373, 111-140 (1986). A review with 67 references on general properties of OPTLC, methods of developing chromatograms, application examples etc.