@article{EUG_1991__28_a1,
     author = {M. A. El Attar and  M. B. Abd-El-Malek and  Y. Z. Boutros},
     title = {Gauss {Principle} of {Least} {Constraint} for the solution of heat conduction problem through an infinite circular solid culinder},
     journal = {E\ensuremath{\upsilon}\ensuremath{\kappa}\ensuremath{\lambda}\ensuremath{\varepsilon}\ensuremath{\acute\iota}\ensuremath{\delta}\ensuremath{\eta}\ensuremath{\varsigma} \ensuremath{\Gamma}
},
     pages = {9-27},
     publisher = {mathdoc},
     volume = {28},
     year = {1991},
     language = {gr},
     url = {http://geodesic.mathdoc.fr/item/EUG_1991__28_a1/}
}