@article{NSJOM_2004_34_2a_5,
     author = {K. Denecke and L. Freiberg},
     title = {The algebra of 

 strongly full terms},
     journal = {Novi Sad Journal of Mathematics},
     pages = {87-98},
     year = {2004},
     volume = {34},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2004_34_2a_5/}
}