Label | Dataset | Type | Subdivision | Identifier | |
---|---|---|---|---|---|
1. | Nielsen, Jakob, 1890- A study concerning the congruence subgroups of the modular group København: I kommission hos Munksgaard; 1950 |
BIBFRAME Instances |
Instance | 9773137 | |
2. | Sommerhäuser, Yorck, 1966- Hopf algebras and congruence subgroups Providence, R.I.: American Mathematical Society; c2011 |
BIBFRAME Instances |
Instance | 17318775 | |
3. | Nielsen, Jakob, 1890- A study concerning the congruence subgroups of the modular group |
BIBFRAME Works |
Work Text Monograph |
9773137 | |
4. | Sommerhäuser, Yorck, 1966- Hopf algebras and congruence subgroups |
BIBFRAME Works |
Work Text Monograph |
17318775 | |
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