@article{SMJ2_2005_31_1-2_a0,
     author = {Kumchev, A. and Tolev, D.},
     title = {An {Invitation} to {Additive} {Prime} {Number} {Theory}},
     journal = {Serdica Mathematical Journal},
     pages = {1--74},
     year = {2005},
     volume = {31},
     number = {1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2005_31_1-2_a0/}
}