Geodesic
Hyperhypersimple $m$-degrees
Algebra i logika, Tome 8 (1969) no. 5, pp. 523-552 
Yu. L. Ershov. Hyperhypersimple $m$-degrees. Algebra i logika, Tome 8 (1969) no. 5, pp. 523-552. http://geodesic.mathdoc.fr/item/AL_1969_8_5_a1/
@article{AL_1969_8_5_a1,
     author = {Yu. L. Ershov},
     title = {Hyperhypersimple $m$-degrees},
     journal = {Algebra i logika},
     pages = {523--552},
     year = {1969},
     volume = {8},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1969_8_5_a1/}
}
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TI  - Hyperhypersimple $m$-degrees
JO  - Algebra i logika
PY  - 1969
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EP  - 552
VL  - 8
IS  - 5
UR  - http://geodesic.mathdoc.fr/item/AL_1969_8_5_a1/
LA  - ru
ID  - AL_1969_8_5_a1
ER  - 
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%T Hyperhypersimple $m$-degrees
%J Algebra i logika
%D 1969
%P 523-552
%V 8
%N 5
%U http://geodesic.mathdoc.fr/item/AL_1969_8_5_a1/
%G ru
%F AL_1969_8_5_a1

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