TY  - JOUR
AU  - Yaroslav A. Kopylov
TI  - The Two-Square Lemma and the connecting morphism in a~preabelian category
JO  - Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika
PY  - 2012
SP  - 316
EP  - 325
VL  - 5
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/JSFU_2012_5_3_a2/
LA  - en
ID  - JSFU_2012_5_3_a2
ER  -