Impulsive controllability and optimization problems in population dynamics SI Nenov Nonlinear Analysis: Theory, Methods & Applications 36 (7), 881-890, 1999 | 152 | 1999 |

Specific asymptotic properties of the solutions of impulsive differential equations. Methods and applications A Dishliev, K Dishlieva, S Nenov Academic Publication, 2012 | 59 | 2012 |

Investigation of relationships between petroleum properties and their impact on crude oil compatibility D Stratiev, I Shishkova, A Nedelchev, K Kirilov, E Nikolaychuk, A Ivanov, ... Energy & Fuels 29 (12), 7836-7854, 2015 | 51 | 2015 |

Opportunity to improve diesel-fuel cetane-number prediction from easily available physical properties and application of the least-squares method and artificial neural networks D Stratiev, I Marinov, R Dinkov, I Shishkova, I Velkov, I Sharafutdinov, ... Energy & Fuels 29 (3), 1520-1533, 2015 | 37 | 2015 |

Commercial investigation of the ebullated-bed vacuum residue hydrocracking in the conversion range of 55–93% D Stratiev, S Nenov, I Shishkova, B Georgiev, G Argirov, R Dinkov, ... ACS omega 5 (51), 33290-33304, 2020 | 33 | 2020 |

Impulsive controllability of tumor growth A Antonov, S Nenov, T Tsvetkov Dynamic Systems and Appl 28 (1), 2019 | 26 | 2019 |

An investigation on the feasibility of simulating the distribution of the boiling point and molecular Weight of heavy oils DS Stratiev, RK Dinkov, IK Shishkova, AD Nedelchev, T Tasaneva, ... Petroleum Science and Technology 33 (5), 527-541, 2015 | 18 | 2015 |

I-optimal curve for impulsive Lotka—Volterra predator-prey model J Angelova, A Dishliev, S Nenov Computers & Mathematics with Applications 43 (10-11), 1203-1218, 2002 | 17 | 2002 |

Challenges in petroleum characterization—A review I Shishkova, D Stratiev, IV Kolev, S Nenov, D Nedanovski, K Atanassov, ... Energies 15 (20), 7765, 2022 | 13 | 2022 |

Intercriteria analysis to diagnose the reasons for increased fouling in a commercial ebullated bed vacuum residue hydrocracker D Stratiev, I Shishkova, R Dinkov, I Kolev, G Argirov, V Ivanov, S Ribagin, ... ACS omega 7 (34), 30462-30476, 2022 | 13 | 2022 |

Catalytic cracking of diverse vacuum residue hydrocracking gas oils D Stratiev, I Shishkova, M Ivanov, R Dinkov, B Georgiev, G Argirov, ... Chemical Engineering & Technology 44 (6), 997-1008, 2021 | 13 | 2021 |

Role of catalyst in optimizing fluid catalytic cracking performance during cracking of h-oil-derived gas oils D Stratiev, I Shishkova, M Ivanov, R Dinkov, B Georgiev, G Argirov, ... ACS omega 6 (11), 7626-7637, 2021 | 12 | 2021 |

Crude Slate, FCC Slurry Oil, Recycle, and Operating Conditions Effects on H-Oil^{®} Product QualityDS Stratiev, IK Shishkova, RK Dinkov, IP Petrov, IV Kolev, D Yordanov, ... Processes 9 (6), 952, 2021 | 11 | 2021 |

Limit sets of impulsive dynamical systems D Bainov, S Nenov Fourth International Colloquium on Differential Equations, 31-34, 1994 | 11 | 1994 |

Prediction of petroleum viscosity from molecular weight and density D Stratiev, I Shishkova, R Dinkov, S Nenov, S Sotirov, E Sotirova, I Kolev, ... Fuel 331, 125679, 2023 | 10 | 2023 |

Petroleum viscosity modeling using least squares and ANN methods D Stratiev, S Nenov, S Sotirov, I Shishkova, G Palichev, E Sotirova, ... Journal of Petroleum Science and Engineering 212, 110306, 2022 | 9 | 2022 |

Different nonlinear regression techniques and sensitivity analysis as tools to optimize oil viscosity modeling D Stratiev, S Nenov, D Nedanovski, I Shishkova, R Dinkov, DD Stratiev, ... Resources 10 (10), 99, 2021 | 8 | 2021 |

Monotone-iterative method for solving antiperiodic nonlinear boundary value problems for generalized delay difference equations with maxima A Golev, S Hristova, S Nenov Abstract and Applied Analysis 2013, 2013 | 7 | 2013 |

Empirical modeling of viscosities and softening points of straight-run vacuum residues from different origins and of hydrocracked unconverted vacuum residues obtained in … D Stratiev, S Nenov, D Nedanovski, I Shishkova, R Dinkov, DD Stratiev, ... Energies 15 (5), 1755, 2022 | 6 | 2022 |

Comparison of empirical models to predict viscosity of secondary vacuum gas oils DS Stratiev, S Nenov, IK Shishkova, RK Dinkov, K Zlatanov, D Yordanov, ... Resources 10 (8), 82, 2021 | 6 | 2021 |