@article{PSMIR_1977___S4_A3_0,
     author = {Ciarlet, Philippe G.},
     title = {Interpolation {Error} {Estimates} for the {Reduced} {Hsieh-Clough-Tocher} {Triangle}},
     journal = {Publications des s\'eminaires de math\'ematiques et informatique de Rennes},
     eid = {3},
     pages = {1--16},
     publisher = {D\'epartement de Math\'ematiques et Informatique, Universit\'e de Rennes},
     number = {S4},
     year = {1977},
     language = {en},
     url = {http://archive.numdam.org/item/PSMIR_1977___S4_A3_0/}
}