ON A MIXED FINITE ELEMENT METHOD FOR THE STOKES PROBLEM IN R³PITKARANTA J.1982; R.A.I.R.O., ANAL. NUMER.; ISSN 0399-0516; FRA; DA. 1982; VOL. 16; NO 3; PP. 275-291; ABS. FRE; BIBL. 10 REF.Article

ON THE SPATIAL DIFFERENCING OF THE DISCRETE ORDINATE NEUTRON TRANSPORT EQUATIONPITKARANTA J.1978; S.I.A.M. J. NUMER. ANAL.; USA; DA. 1978; VOL. 15; NO 5; PP. 859-869; BIBL. 17 REF.Article

ON THE VARIATIONAL APPROXIMATION OF THE TRANSPORT OPERATOR.PITKARANTA J.1976; J. MATH. ANAL. APPL.; U.S.A.; DA. 1976; VOL. 54; NO 2; PP. 419-440; BIBL. 14 REF.Article

ESTIMATES FOR THE DERIVATIVES OF SOLUTIONS TO WEAKLY SINGULAR FREDHOLM INTEGRAL EQUATIONSPITKARANTA J.1980; SIAM J. MATH. ANAL.; ISSN 0036-1410; USA; DA. 1980; VOL. 11; NO 6; PP. 952-968; BIBL. 9 REF.Article

ASYMPTOTIC BEHAVIOR OF THE SOLUTION OF THE INTEGRAL TRANSPORT EQUATION IN THE VICINITY OF A CURVED MATERIAL INTERFACEPITKARANTA J.1979; S.I.A.M. J. APPL. MATH.; USA; DA. 1979; VOL. 36; NO 2; PP. 200-218; BIBL. 10 REF.Article

APPROXIMATE SOLUTION OF THE TRANSPORT EQUATION BY METHODS OF GALERKIN TYPE.PITKARANTA J.1977; J. MATH. ANAL. APPL.; U.S.A.; DA. 1977; VOL. 60; NO 1; PP. 186-210; BIBL. 22 REF.Article

ON THE DIFFERENTIAL PROPERTIES OF SOLUTIONS TO FREDHOLM EQUATIONS WITH WEAKLY SINGULAR KERNELSPITKARANTA J.1979; J. INST. MATH. APPL., LONDON; GBR; DA. 1979; VOL. 24; NO 2; PP. 109-119; BIBL. 8 REF.Article

A NON-SELF-ADJOINT VARIATIONAL PROCEDURE FOR THE FINITE-ELEMENT APPROXIMATION OF THE TRANSPORT EQUATION.PITKARANTA J.1975; TRANSP. THEORY STATIST. PHYS.; U.S.A.; DA. 1975; VOL. 4; NO 1; PP. 1-24; BIBL. 10 REF.Article

Analysis of some low-order finite element schemes for Mindlin-Reissner and Kirchhoff platesPITKARANTA, J.Numerische Mathematik. 1988, Vol 53, Num 1-2, pp 237-254, issn 0029-599XArticle

ANALYSIS OF SOME MIXED FINITE ELEMENT METHODS RELATED TO REDUCED INTEGRATIONJOHNSON C; PITKARANTA J.1982; MATH. COMPUT.; ISSN 0025-5718; USA; DA. 1982; VOL. 38; NO 158; PP. 375-400; BIBL. 15 REF.Article

A SYMMETRIZED PERTURBATION PROCEDURE FOR THE TRANSPORT OPERATOR.PITKARANTA J; SILVENNOINEN P.1975; S.I.A.M. J. APPL. MATH.; U.S.A.; DA. 1975; VOL. 28; NO 1; PP. 124-129; BIBL. 8 REF.Article

COMPUTATIONAL EXPERIMENTATION ON THE FINITE ELEMENT METHOD IN BARE SLAB CRITICALITY CALCULATIONSPITKARANTA J; SILVENNOINEN P.1973; NUCL. SCI. ENGNG; U.S.A.; DA. 1973; VOL. 50; NO 3; PP. 297-300; BIBL. 9 REF.Serial Issue

The problem of membrane locking in finite element analysis of cylindrical shellsPITKÄRANTA, J.Numerische Mathematik. 1992, Vol 61, Num 4, pp 523-542, issn 0029-599XArticle

DIRECT AND INVERSE ERROR ESTIMATES FOR FINITE ELEMENTS WITH MESH REFINEMENTSBABUSKA I; KELLOGG RB; PITKARANTA J et al.1979; NUMER. MATH.; DEU; DA. 1979; VOL. 33; NO 4; PP. 447-471; BIBL. 16 REF.Article

ON A SYNTHETIC SCATTERING KERNEL IN NEUTRON THERMALIZATIONJAUHO P; PITKARANTA J; SILVENNOINEN P et al.1972; J. NUCL. ENERGY; G.B.; DA. 1972; VOL. 26; NO 6; PP. 287-291; BIBL. 5 REF.Serial Issue

Error estimates for the combined spatial and angular approximations of the transport equation for slab geometryPITKARANTA, J; SCOTT, L. R.SIAM journal on numerical analysis. 1983, Vol 20, Num 5, pp 922-950, issn 0036-1429Article

Convergence of a fully discrete scheme for two-dimensional neutron transportJOHNSON, C; PITKARANTA, J.SIAM journal on numerical analysis. 1983, Vol 20, Num 5, pp 951-966, issn 0036-1429Article

On the asymptotic behaviour of sensitive shells with small thicknessPITKARANTA, J; SANCHEZ-PALENCIA, E.Comptes rendus de l'Académie des sciences. Série II, Mécanique, physique, chimie, astronomie. 1997, Vol 325, Num 3, pp 127-134, issn 1251-8069Article

Analysis of some mixed finite element methods for plane elasticity equationsPITKARANTA, J; STENBERG, R.Mathematics of computation. 1983, Vol 41, Num 164, pp 399-423, issn 0025-5718Article

An analysis of the discontinuous Galerkin method for a scalar hyperbolic equationJOHNSON, C; PITKARANTA, J.Mathematics of computation. 1986, Vol 46, Num 173, pp 1-26, issn 0025-5718Article

Energy estimates relating different linear elastic models of a thin cylindrical shell. I: the membrane-dominated casePIILA, J; PITKÄRANTA, J.SIAM journal on mathematical analysis. 1993, Vol 24, Num 1, pp 1-22, issn 0036-1410Article

On comer irregularities that arise in hyperbolic shell membrane theoryPIILA, J; PITKÄRANTA, J.Mathematical methods in the applied sciences. 2002, Vol 25, Num 10, pp 855-874, issn 0170-4214Article

An h-p-n adaptive finite element scheme for shell problemsOVASKAINEN, O; PITKÄRANTA, J.Advances in engineering software (1992). 1996, Vol 26, Num 3, pp 201-207, issn 0965-9978Article

On the membrane locking of h-p finite elements in a cylindrical shell problemLEINO, Y; PITKÄRANTA, J.International journal for numerical methods in engineering. 1994, Vol 37, Num 6, pp 1053-1070, issn 0029-5981Article

An analysis of finite element locking in a parameter dependent model problemHAVU, V; PITKÄRANTA, J.Numerische Mathematik. 2001, Vol 89, Num 4, pp 691-714, issn 0029-599XArticle