@Article{gi,

author = {R\u{a}zvan Diaconescu},

title = {Grothendieck Institutions},

journal = {Applied Categorical Structures},

year = 2002,

volume = 10,

number = 4,

pages = {383--402},

note = {Preliminary version appeared as IMAR Preprint 2-2000,

ISSN 250-3638, February 2000.}

}