J. Planar Chromatogr. 2, 165-168 (1989). Practice of planar chromatography. Equations are given for resolution, plate height, separation number and best number of developments producing maximum separation.

J. Chromatogr. 550, 645-656 (1991). Discussion of a model chromatographic process which takes into account molecular association in the mobile phase. Application of the model to the study of the association effects in liquid adsorption chromatography with ternary mobile phases. Use of Jaroniec’s equation in description of molecular interactions

(Finnish). Kemia-Kemi 24, 224-228 (1997). Advantages of HPTLC, AMD, OPLC and a special spectrum library are described. According to the authors important fields that utilize TLC are pharmaceutical analysis, toxicology and pharmacognosy.

J. Chromatogr. A 1053 (1-2), 15-26 (2004). The mini-review summarizes the develoment of different classes of novel quaternarized heterocyclic compounds able to modulate and reverse the electroendoosmotic flow (EOF) in a most peculiar manner. The first class comprises mono-salt compounds, with the determinant omega-iodoalkyl chains of different lengths (typically C4-C8), able to be adsorbed by silicas at alkaline pH and spontaneously alkylate ionised silanols, thus becoming covalently affixed to it. The second class is constituted by di-salt compounds, attached at the termini of an alkyl chain of variable lengths (typically C4-C8). This second class is unable to bind covalently silica surfaces although in thin-layer chromatography it exhibits an extraordinary affinity for silica beads, contrary to the first one. On the basis of the strikingly different behaviour structural rules are derived for the minimum requirements for general classes of amines to bind to silica walls and modify EOF. For compounds unable to bind covalently to the wall, the most important structural motif is two quaternary nitrogens spaced apart by a C4 chain: this seems to be the average distance (i.e. 0.8 nm) between two adjacent, ionized silanols for a snug fit. The other structural binding motif is the "hydrophobic decoration", i.e. the ratio of charged groups to alkyl residue in the various amines; amines with high levels of such alkane groups (i.e. with higher hydrophobicity), seem to bind more tenaciously to the wall, probably due to hydrophobic interaction not to the wall but among the amine derivatives themselves when carpeting the silica.

J. Planar Chromatogr. 28, 133-138 (2015). HPTLC on RP-18W phase with acetonitrile - water 1:3 with acetic buffer (4 mM) and with or without ion-pair reagent (sodium-1-heptane sulfonate, tetrabutylammonium chloride, and bis(2-ethylhexyl)hydrogen phosphate). The influence of the addition of different ion-pair reagents to the mobile phase on the velocity of the electroosmotic flow in pressurized planar electrochromatography was examined. The results demonstrate that in pressurized planar electrochromatography, a small addition of ion-pair reagents affects the selectivity of separation.

Chromatogr. Sci. 55, 43-69 (1991). A review with 33 references. Discussion of physical phenomena important for the chromatographic process, as well as main concepts for efficiency of separation. Also review of semiempirical models of partitions and adsorption chromatography and discussion of their usefulness in every day lab practise.

J. Planar Chromatogr. 7, 63-69 (1994). Investigation of the mechanism of solute retention in silica gel adsorption TLC using three different mobile phases, i.e. isopropanol - hexane, isopropanol - heptane, isopropanol - octane mixtures. The empirical results were compared with predictions based on the classical displacement model, and on the so-called alternative model which concentrates on intermolecular interactions between the components of mixed mobile phases.

Planar Chromatogr. 19, 332-341 (2006). In TLC the development step distributes the sample throughout the layer. The essential reqirement for quantitative TLC is a constant sample distribution in each sample spot. The paper shows that quantitative TLC is possible even if the concentration of the sample is not constant. In the absence of uniform sample distribution classical Kubelka-Munk theory must be extended. The extended theory presented is not only capable of describing asymmetrical scattering in TLC layers but also includes a formula for absorption and fluorescence in diode-array TLC. With this new formula all different formulas for diode-array thin-layer chromatographic evaluation are combined in one expression.