[212] Wierzcholski K..:Synovial flow parameters in human joint gap..(in English). Tribologia ISSN 0208-7774 Nr.6,(162), 1998 pp.982-996
[213] Wierzcholski K..:The thigh human bonę torsion with hollow canals.(in English). Tribologia ISSN 0208-7774 Nr.6,(162), 1998 pp 997-1008
[214] Wierzcholski*.K., Czajkowski A.,:Analysis of the capacity force for synovia symmetrical flow in the human joint with the changeable gap..(in English), Participation of the Author* is 50%.Tribologia 6,1998 (162) ISSN 0208-7774 pp.1009-1021
[215] Wierzcholski*.K., Czajkowski A.,:AnaIysis of the friction force for synovia symmetrical flow in the human joint with the changeable gap (in English),.Participation of the Author* is 50%.Tribologia 6,1998 (162) ISSN 0208-7774 pp.1022-1034
[216] WierzchoIski*.K., Czajkowski A.,:Squeezing out of synovia in biobearing gap (in English),. Participation of the Author* is 80%.Tribologia 4,1998 (160) ISSN 0208-7774 pp.509-516
[217] Kufel K.,Wierzcholski*.K., Czajkowski A.,:Experimental and analytical wear study of plough sheares with the elastic and rigid connections to the frame (in English),. Particip. of the Author* is 30%.Tribologia 5,1998 (161) ISSN 0208-7774 pp.740-753
[218] Wierzcholski Krzysztof : Oil velocity and pressure distribution in short journal bearing under Rivlin Ericksen lubrication. (in English),SAMS,System Analysis Modelling and Simulations OPA Overseas Publishers. Assoc. N.V.. vol.32, 1998,pp.205-228
[219] Wierzcholski K.:The influence of human bonę torsion on biobearing calculation.(in English) IV Internationale Tagung der Fachhochsschule Stralsund,1998 Tagungsband pp. 109-119
[220] Wierzcholski K.:Computer Simulations of Short Radial Bearing Capacity for Rivlin Ericksen Oils. .(in English),SAMS,System Analysis Modelling and Simulations OPA Overseas Publishers. Association N.V.. voI.33, 1998,pp.219-238
[221] Wierzcholski Krzysztof:Anwendungen der Fluidmechanik.(in Polish) Zastosowania elementów mechaniki płynów.Teoria i zadania.Wydawnictwo Naukowe Politechniki Szczecińskiej ISBN-83-87423-12-2, Szczecin 1998
[222] Wierzcholski K.,Miszczak A.:Determination of the oil dynamie viscosity from the measured friction force.(in English)XXXVIII Symposion PTMTS Modelling in Applied Mechanics,Zeszyty Naukowe Katedry Mechaniki Stosowanej Technical University of Gliwice 1999, 333-338
[223] Wierzcholski K.: The determination of the synovial fluid viscosity on the basis of the measured friction forces.(in English)Problems of Unconventional Bearing Systems 4, Technical University Lodź, 1999,pp.l67-175
[224] Wierzcholski K.: The analytical simulations of thermoelasticity deformations for journal bearing gap.(in English)Third International Congress on Thermal Stresses 1999, Cracow Poland Conference Proceedings ISBN 83-86991-57-7, pp.391-394
[225] Wierzcholski*.K., Czajkowski A.,:A kinds of friction forces in Biotribology (in English),.Participation of the Author* is 50%.Orthopedics and Prosthesis Engineering Conference, 2,IOP Białystok, ISBN 83-86272-94-5,Vol.l 1999,pp.357-368
[226] Wierzcholski K: A tribology of curvilinear surfaces in human joints. Acta of Bioengineering and Biomechanics, (in English)Vol. I Nr.2, 1999 , pp.3-11
[227] Wierzcholski*.K., Czajkowski A.,:Graphical analysis for geometry and synovia flow profiles in the human joints,.Participation of the Author* is 50%.Proceedimgs of the 4"1 Polish Scientific Conference Biomechanics 1999, Polanica pp.85-88
[228] K. Wierzcholski: Taylor senes approximation of fluid sąueeze flow solutions.(in English)Computers in Medicine 5, 1999 Volume II Polish Society of Medical Informatics,pp.l57-163
[229] Wierzcholski K.: Synovial fluid sąueeze film flow in curvilinear biobearing human gap .(in English)Computers in Medicine 5, 1999 Yolume II Polish Society of Medical Informatics,pp.l51-156