@Article{ ROMÁN_MARTINEZ_RODRÍGUEZ:620-657,

author = { SERGIO MIGUEL ROMÁN ROMÁN and ANTONIO MARTINEZ CEGARRA and ANTONIO M. RODRÍGUEZ GARZÓN } ,

title = { GRADED EXTENSIONS OF MANOIDAL CATEGORIES },

journal = { JOURNAL OF ALGEBRA },

year = { 2001 },

volume = { 241 },

issn = { 0021-8693 },

pages = { 620-657 },

}