@article{ZNSL_2001_282_a1,
     author = {L. B\'aes-Duarte},
     title = {Harmonic series summation lemma and {Vasyunin's} formulas},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {20--25},
     publisher = {mathdoc},
     volume = {282},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2001_282_a1/}
}