Í. B. Kilkis S. S. Sager Mahmut Uludag A simplified model for radiant heating and cooling panels. 61-76 1994 2 Simul. Pr. Theory 2 http://dx.doi.org/10.1016/0928-4869(94)90014-0 db/journals/simpra/simpra2.html#KilkisSU94