@article{FPM_2016_21_6_a3,
     author = {D. Burghelea},
     title = {Refinement of {Novikov--Betti} numbers and of {Novikov} homology provided by an angle valued map},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {93--113},
     publisher = {mathdoc},
     volume = {21},
     number = {6},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_2016_21_6_a3/}
}