no. 1
Limit semigroups of Stancu-Mühlbach operators associated with positive projections
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 19 (1992) no. 1, pp. 51-67. 
@article{ASNSP_1992_4_19_1_51_0,
     author = {Campiti, Michele},
     title = {Limit semigroups of {Stancu-M\"uhlbach} operators associated with positive projections},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {51--67},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 19},
     number = {1},
     year = {1992},
     mrnumber = {1183757},
     zbl = {0784.47040},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1992_4_19_1_51_0/}
}
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Campiti, Michele. Limit semigroups of Stancu-Mühlbach operators associated with positive projections. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Série 4, Tome 19 (1992) no. 1, pp. 51-67. http://www.numdam.org/item/ASNSP_1992_4_19_1_51_0/

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