@article{KUIPM_1984_12_12_a1,
     author = {N. Kh. Nasyrova},
     title = {Studying the properties of learning elements from their program implementation},
     journal = {Issledovaniya po Prikladnoi Matematike i Informatike},
     pages = {10--17},
     year = {1984},
     volume = {12},
     number = {12},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/KUIPM_1984_12_12_a1/}
}