@article{700659,
     title = {Joint-convergence in function spaces. Order of $\mathfrak {W}$ closures.},
     booktitle = {General topology and its relations to modern analysis and algebra IV},
     series = {GDML\_Books},
     publisher = {Society of Czechoslovak Mathematicians and Physicist},
     address = {Praha},
     year = {1977},
     pages = {[506]-512},
     mrnumber = {MR0461406},
     zbl = {0378.54001},
     url = {http://dml.mathdoc.fr/item/700659}
}

Wichterle, K. Joint-convergence in function spaces. Order of $\mathfrak {W}$ closures., dans General topology and its relations to modern analysis and algebra IV, GDML_Books,  (1977), pp. [506]-512. http://gdmltest.u-ga.fr/item/700659/