@article{NSJOM_2011_41_2a_15,
     author = {M. Budin\v{c}evi\'c, and R. To\v{s}i\'c},
     title = {On the number of

 even blocks in words},
     journal = {Novi Sad Journal of Mathematics},
     pages = {159-160},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2011_41_2a_15/}
}