no. 3
Essentially equational categories
Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 29 (1988) no. 3, pp. 175-192. 
@article{CTGDC_1988__29_3_175_0,
     author = {Ad\'amek, J. and Herrlich, H. and Rosick\'y, J.},
     title = {Essentially equational categories},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {175--192},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {29},
     number = {3},
     year = {1988},
     mrnumber = {975371},
     zbl = {0659.18010},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_1988__29_3_175_0/}
}
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Adámek, J.; Herrlich, H.; Rosický, J. Essentially equational categories. Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 29 (1988) no. 3, pp. 175-192. http://www.numdam.org/item/CTGDC_1988__29_3_175_0/

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